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Second batch of cleanup for 3.20:

Browse source 
- By reworking the PM code, we can remove the AT91 more specific initialization
 - We are using DT for SRAM initialization now, so we can remove its explicit
   mapping
 - The PMC clock driver now hosts IDLE function for at91rm9200 with other
   SoCs ones.
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Merge tag 'at91-cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91 into next/soc

Merge "at91: cleanup for 3.20 #2" from Nicolas Ferre:

Second batch of cleanup for 3.20:
- By reworking the PM code, we can remove the AT91 more specific initialization
- We are using DT for SRAM initialization now, so we can remove its explicit
  mapping
- The PMC clock driver now hosts IDLE function for at91rm9200 with other
  SoCs ones.

* tag 'at91-cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/nferre/linux-at91: (37 commits)
  ARM: at91: move at91rm9200_idle() to clk/at91/pmc.c
  ARM: at91: remove unused at91_init_sram
  ARM: at91: sama5d4: remove useless call to at91_init_sram
  ARM: at91: remove useless map_io
  ARM: at91: pm: prepare for multiplatform
  ARM: at91: pm: add UDP and UHP checks to newer SoCs
  ARM: at91: pm: use the mmio-sram pool to access SRAM
  ARM: at91: pm: rework cpu detection
  ARM: at91: dts: sama5d3: add ov2640 camera sensor support
  ARM: at91: dts: sama5d3: change name of pinctrl of ISI_MCK
  ARM: at91: dts: sama5d3: change name of pinctrl_isi_{power,reset}
  ARM: at91: dts: sama5d3: move the isi mck pin to mb
  ARM: at91: dts: sama5d3: add missing pins of isi
  ARM: at91: dts: sama5d3: split isi pinctrl
  ARM: at91: dts: sama5d3: add isi clock
  ARM: at91/dt: ethernut5: use at91sam9xe.dtsi
  ARM: at91/dt: Add a dtsi for at91sam9xe
  ARM: at91/dt: add SRAM nodes
  ARM: at91/dt: at91rm9200ek: enable RTC
  ARM: at91/dt: rm9200: add RTC node
  ...

Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
Olof Johansson 2015-01-21 15:17:56 -08:00
commit 7f09a46fe9
45 changed files with 520 additions and 491 deletions
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124
Documentation/arm/Atmel/README Normal file
View file

@ -0,0 +1,124 @@
ARM Atmel SoCs (aka AT91)
=========================
Introduction
------------
This document gives useful information about the ARM Atmel SoCs that are
currently supported in Linux Mainline (you know, the one on kernel.org).
It is important to note that the Atmel | SMART ARM-based MPU product line is
historically named "AT91" or "at91" throughout the Linux kernel development
process even if this product prefix has completely disappeared from the
official Atmel product name. Anyway, files, directories, git trees,
git branches/tags and email subject always contain this "at91" sub-string.
AT91 SoCs
---------
Documentation and detailled datasheet for each product are available on
the Atmel website: http://www.atmel.com.
Flavors:
* ARM 920 based SoC
- at91rm9200
+ Datasheet
http://www.atmel.com/Images/doc1768.pdf
* ARM 926 based SoCs
- at91sam9260
+ Datasheet
http://www.atmel.com/Images/doc6221.pdf
- at91sam9xe
+ Datasheet
http://www.atmel.com/Images/Atmel-6254-32-bit-ARM926EJ-S-Embedded-Microprocessor-SAM9XE_Datasheet.pdf
- at91sam9261
+ Datasheet
http://www.atmel.com/Images/doc6062.pdf
- at91sam9263
+ Datasheet
http://www.atmel.com/Images/Atmel_6249_32-bit-ARM926EJ-S-Microcontroller_SAM9263_Datasheet.pdf
- at91sam9rl
+ Datasheet
http://www.atmel.com/Images/doc6289.pdf
- at91sam9g20
+ Datasheet
http://www.atmel.com/Images/doc6384.pdf
- at91sam9g45 family
- at91sam9g45
- at91sam9g46
- at91sam9m10
- at91sam9m11 (device superset)
+ Datasheet
http://www.atmel.com/Images/Atmel-6437-32-bit-ARM926-Embedded-Microprocessor-SAM9M11_Datasheet.pdf
- at91sam9x5 family (aka "The 5 series")
- at91sam9g15
- at91sam9g25
- at91sam9g35
- at91sam9x25
- at91sam9x35
+ Datasheet (can be considered as covering the whole family)
http://www.atmel.com/Images/Atmel_11055_32-bit-ARM926EJ-S-Microcontroller_SAM9X35_Datasheet.pdf
- at91sam9n12
+ Datasheet
http://www.atmel.com/Images/Atmel_11063_32-bit-ARM926EJ-S-Microcontroller_SAM9N12CN11CN12_Datasheet.pdf
* ARM Cortex-A5 based SoCs
- sama5d3 family
- sama5d31
- sama5d33
- sama5d34
- sama5d35
- sama5d36 (device superset)
+ Datasheet
http://www.atmel.com/Images/Atmel-11121-32-bit-Cortex-A5-Microcontroller-SAMA5D3_Datasheet.pdf
* ARM Cortex-A5 + NEON based SoCs
- sama5d4 family
- sama5d41
- sama5d42
- sama5d43
- sama5d44 (device superset)
+ Datasheet
http://www.atmel.com/Images/Atmel-11238-32-bit-Cortex-A5-Microcontroller-SAMA5D4_Datasheet.pdf
Linux kernel information
------------------------
Linux kernel mach directory: arch/arm/mach-at91
MAINTAINERS entry is: "ARM/ATMEL AT91RM9200 AND AT91SAM ARM ARCHITECTURES"
Device Tree for AT91 SoCs and boards
------------------------------------
All AT91 SoCs are converted to Device Tree. Since Linux 3.19, these products
must use this method to boot the Linux kernel.
Work In Progress statement:
Device Tree files and Device Tree bindings that apply to AT91 SoCs and boards are
considered as "Unstable". To be completely clear, any at91 binding can change at
any time. So, be sure to use a Device Tree Binary and a Kernel Image generated from
the same source tree.
Please refer to the Documentation/devicetree/bindings/ABI.txt file for a
definition of a "Stable" binding/ABI.
This statement will be removed by AT91 MAINTAINERS when appropriate.
Naming conventions and best practice:
- SoCs Device Tree Source Include files are named after the official name of
the product (at91sam9g20.dtsi or sama5d33.dtsi for instance).
- Device Tree Source Include files (.dtsi) are used to collect common nodes that can be
shared across SoCs or boards (sama5d3.dtsi or at91sam9x5cm.dtsi for instance).
When collecting nodes for a particular peripheral or topic, the identifier have to
be placed at the end of the file name, separated with a "_" (at91sam9x5_can.dtsi
or sama5d3_gmac.dtsi for example).
- board Device Tree Source files (.dts) are prefixed by the string "at91-" so
that they can be identified easily. Note that some files are historical exceptions
to this rule (sama5d3[13456]ek.dts, usb_a9g20.dts or animeo_ip.dts for example).

17
Documentation/devicetree/bindings/arm/atmel-at91.txt
View file

@ -24,6 +24,7 @@ compatible: must be one of:
o "atmel,at91sam9g45"
o "atmel,at91sam9n12"
o "atmel,at91sam9rl"
o "atmel,at91sam9xe"
* "atmel,sama5" for SoCs using a Cortex-A5, shall be extended with the specific
SoC family:
o "atmel,sama5d3" shall be extended with the specific SoC compatible:
@ -136,3 +137,19 @@ Example:
compatible = "atmel,at91sam9260-rstc";
reg = <0xfffffd00 0x10>;
};
Special Function Registers (SFR)
Special Function Registers (SFR) manage specific aspects of the integrated
memory, bridge implementations, processor and other functionality not controlled
elsewhere.
required properties:
- compatible: Should be "atmel,<chip>-sfr", "syscon".
<chip> can be "sama5d3" or "sama5d4".
- reg: Should contain registers location and length
sfr@f0038000 {
compatible = "atmel,sama5d3-sfr", "syscon";
reg = <0xf0038000 0x60>;
};

1
MAINTAINERS
View file

@ -877,6 +877,7 @@ F: arch/arm/boot/dts/at91*.dts
F: arch/arm/boot/dts/at91*.dtsi
F: arch/arm/boot/dts/sama*.dts
F: arch/arm/boot/dts/sama*.dtsi
F: arch/arm/include/debug/at91.S
ARM/ATMEL AT91 Clock Support
M: Boris Brezillon <boris.brezillon@free-electrons.com>

9
arch/arm/Kconfig.debug
View file

@ -115,15 +115,18 @@ choice
0x80024000 | 0xf0024000 | UART9
config AT91_DEBUG_LL_DBGU0
bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10 and 9rl"
bool "Kernel low-level debugging on rm9200, 9260/9g20, 9261/9g10, 9rl, 9x5, 9n12"
select DEBUG_AT91_UART
depends on HAVE_AT91_DBGU0
config AT91_DEBUG_LL_DBGU1
bool "Kernel low-level debugging on 9263 and 9g45"
bool "Kernel low-level debugging on 9263, 9g45 and sama5d3"
select DEBUG_AT91_UART
depends on HAVE_AT91_DBGU1
config AT91_DEBUG_LL_DBGU2
bool "Kernel low-level debugging on sama5d4"
select DEBUG_AT91_UART
depends on HAVE_AT91_DBGU2
config DEBUG_BCM2835
@ -1204,6 +1207,8 @@ config DEBUG_LL_INCLUDE
string
default "debug/sa1100.S" if DEBUG_SA1100
default "debug/8250.S" if DEBUG_LL_UART_8250 || DEBUG_UART_8250
default "debug/at91.S" if AT91_DEBUG_LL_DBGU0 || AT91_DEBUG_LL_DBGU1 || \
AT91_DEBUG_LL_DBGU2
default "debug/asm9260.S" if DEBUG_ASM9260_UART
default "debug/clps711x.S" if DEBUG_CLPS711X_UART1 || DEBUG_CLPS711X_UART2
default "debug/meson.S" if DEBUG_MESON_UARTAO

12
arch/arm/boot/dts/at91rm9200.dtsi
View file

@ -66,6 +66,11 @@
};
};
sram: sram@00200000 {
compatible = "mmio-sram";
reg = <0x00200000 0x4000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;
@ -356,6 +361,13 @@
interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
};
rtc: rtc@fffffe00 {
compatible = "atmel,at91rm9200-rtc";
reg = <0xfffffe00 0x40>;
interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
status = "disabled";
};
tcb0: timer@fffa0000 {
compatible = "atmel,at91rm9200-tcb";
reg = <0xfffa0000 0x100>;

4
arch/arm/boot/dts/at91rm9200ek.dts
View file

@ -77,6 +77,10 @@
dbgu: serial@fffff200 {
status = "okay";
};
rtc: rtc@fffffe00 {
status = "okay";
};
};
usb0: ohci@00300000 {

5
arch/arm/boot/dts/at91sam9260.dtsi
View file

@ -69,6 +69,11 @@
};
};
sram0: sram@002ff000 {
compatible = "mmio-sram";
reg = <0x002ff000 0x2000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;

5
arch/arm/boot/dts/at91sam9261.dtsi
View file

@ -60,6 +60,11 @@
};
};
sram: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x28000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;

12
arch/arm/boot/dts/at91sam9263.dtsi
View file

@ -62,6 +62,16 @@
};
};
sram0: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x14000>;
};
sram1: sram@00500000 {
compatible = "mmio-sram";
reg = <0x00300000 0x4000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;
@ -294,7 +304,7 @@
reg = <17>;
};
ac91_clk: ac97_clk {
ac97_clk: ac97_clk {
#clock-cells = <0>;
reg = <18>;
};

9
arch/arm/boot/dts/at91sam9g20.dtsi
View file

@ -16,6 +16,15 @@
reg = <0x20000000 0x08000000>;
};
sram0: sram@002ff000 {
status = "disabled";
};
sram1: sram@002fc000 {
compatible = "mmio-sram";
reg = <0x002fc000 0x8000>;
};
ahb {
apb {
i2c0: i2c@fffac000 {

7
arch/arm/boot/dts/at91sam9g45.dtsi
View file

@ -74,6 +74,11 @@
};
};
sram: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x10000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;
@ -1287,7 +1292,6 @@
compatible = "atmel,at91rm9200-ohci", "usb-ohci";
reg = <0x00700000 0x100000>;
interrupts = <22 IRQ_TYPE_LEVEL_HIGH 2>;
//TODO
clocks = <&usb>, <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
clock-names = "usb_clk", "ohci_clk", "hclk", "uhpck";
status = "disabled";
@ -1297,7 +1301,6 @@
compatible = "atmel,at91sam9g45-ehci", "usb-ehci";
reg = <0x00800000 0x100000>;
interrupts = <22 IRQ_TYPE_LEVEL_HIGH 2>;
//TODO
clocks = <&usb>, <&uhphs_clk>, <&uhphs_clk>, <&uhpck>;
clock-names = "usb_clk", "ehci_clk", "hclk", "uhpck";
status = "disabled";

12
arch/arm/boot/dts/at91sam9n12.dtsi
View file

@ -64,6 +64,11 @@
};
};
sram: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x8000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;
@ -893,6 +898,13 @@
status = "disabled";
};
rtc@fffffeb0 {
compatible = "atmel,at91rm9200-rtc";
reg = <0xfffffeb0 0x40>;
interrupts = <1 IRQ_TYPE_LEVEL_HIGH 7>;
status = "disabled";
};
pwm0: pwm@f8034000 {
compatible = "atmel,at91sam9rl-pwm";
reg = <0xf8034000 0x300>;

5
arch/arm/boot/dts/at91sam9rl.dtsi
View file

@ -70,6 +70,11 @@
};
};
sram: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x10000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;

5
arch/arm/boot/dts/at91sam9x5.dtsi
View file

@ -72,6 +72,11 @@
};
};
sram: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x8000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;

60
arch/arm/boot/dts/at91sam9xe.dtsi Normal file
View file

@ -0,0 +1,60 @@
/*
* at91sam9xe.dtsi - Device Tree Include file for AT91SAM9XE family SoC
*
* Copyright (C) 2015 Atmel,
* 2015 Alexandre Belloni <alexandre.Belloni@free-electrons.com>
*
* This file is dual-licensed: you can use it either under the terms
* of the GPL or the X11 license, at your option. Note that this dual
* licensing only applies to this file, and not this project as a
* whole.
*
* a) This file is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This file is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* Or, alternatively,
*
* b) Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
#include "at91sam9260.dtsi"
/ {
model = "Atmel AT91SAM9XE family SoC";
compatible = "atmel,at91sam9xe", "atmel,at91sam9260";
sram0: sram@002ff000 {
status = "disabled";
};
sram1: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x4000>;
};
};

2
arch/arm/boot/dts/ethernut5.dts
View file

@ -6,7 +6,7 @@
* Licensed under GPLv2.
*/
/dts-v1/;
#include "at91sam9260.dtsi"
#include "at91sam9xe.dtsi"
/ {
model = "Ethernut 5";

34
arch/arm/boot/dts/sama5d3.dtsi
View file

@ -78,6 +78,11 @@
};
};
sram: sram@00300000 {
compatible = "mmio-sram";
reg = <0x00300000 0x20000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;
@ -214,7 +219,20 @@
compatible = "atmel,at91sam9g45-isi";
reg = <0xf0034000 0x4000>;
interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_isi_data_0_7>;
clocks = <&isi_clk>;
clock-names = "isi_clk";
status = "disabled";
port {
#address-cells = <1>;
#size-cells = <0>;
};
};
sfr: sfr@f0038000 {
compatible = "atmel,sama5d3-sfr", "syscon";
reg = <0xf0038000 0x60>;
};
mmc1: mmc@f8000000 {
@ -545,7 +563,7 @@
};
isi {
pinctrl_isi: isi-0 {
pinctrl_isi_data_0_7: isi-0-data-0-7 {
atmel,pins =
<AT91_PIOA 16 AT91_PERIPH_C AT91_PINCTRL_NONE /* PA16 periph C ISI_D0, conflicts with LCDDAT16 */
AT91_PIOA 17 AT91_PERIPH_C AT91_PINCTRL_NONE /* PA17 periph C ISI_D1, conflicts with LCDDAT17 */
@ -557,13 +575,19 @@
AT91_PIOA 23 AT91_PERIPH_C AT91_PINCTRL_NONE /* PA23 periph C ISI_D7, conflicts with LCDDAT23, PWML1 */
AT91_PIOC 30 AT91_PERIPH_C AT91_PINCTRL_NONE /* PC30 periph C ISI_PCK, conflicts with UTXD0 */
AT91_PIOA 31 AT91_PERIPH_C AT91_PINCTRL_NONE /* PA31 periph C ISI_HSYNC, conflicts with TWCK0, UTXD1 */
AT91_PIOA 30 AT91_PERIPH_C AT91_PINCTRL_NONE /* PA30 periph C ISI_VSYNC, conflicts with TWD0, URXD1 */
AT91_PIOC 29 AT91_PERIPH_C AT91_PINCTRL_NONE /* PC29 periph C ISI_PD8, conflicts with URXD0, PWMFI2 */
AT91_PIOA 30 AT91_PERIPH_C AT91_PINCTRL_NONE>; /* PA30 periph C ISI_VSYNC, conflicts with TWD0, URXD1 */
};
pinctrl_isi_data_8_9: isi-0-data-8-9 {
atmel,pins =
<AT91_PIOC 29 AT91_PERIPH_C AT91_PINCTRL_NONE /* PC29 periph C ISI_PD8, conflicts with URXD0, PWMFI2 */
AT91_PIOC 28 AT91_PERIPH_C AT91_PINCTRL_NONE>; /* PC28 periph C ISI_PD9, conflicts with SPI1_NPCS3, PWMFI0 */
};
pinctrl_isi_pck_as_mck: isi_pck_as_mck-0 {
pinctrl_isi_data_10_11: isi-0-data-10-11 {
atmel,pins =
<AT91_PIOD 31 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PD31 periph B ISI_MCK */
<AT91_PIOC 27 AT91_PERIPH_C AT91_PINCTRL_NONE /* PC27 periph C ISI_PD10, conflicts with SPI1_NPCS2, TWCK1 */
AT91_PIOC 26 AT91_PERIPH_C AT91_PINCTRL_NONE>; /* PC26 periph C ISI_PD11, conflicts with SPI1_NPCS1, TWD1 */
};
};

1
arch/arm/boot/dts/sama5d3xcm.dtsi
View file

@ -122,6 +122,7 @@
d2 {
label = "d2";
gpios = <&pioE 25 GPIO_ACTIVE_LOW>; /* PE25, conflicts with A25, RXD2 */
linux,default-trigger = "heartbeat";
};
};
};

40
arch/arm/boot/dts/sama5d3xmb.dtsi
View file

@ -52,6 +52,29 @@
};
};
i2c1: i2c@f0018000 {
ov2640: camera@0x30 {
compatible = "ovti,ov2640";
reg = <0x30>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pck1_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
resetb-gpios = <&pioE 24 GPIO_ACTIVE_LOW>;
pwdn-gpios = <&pioE 29 GPIO_ACTIVE_HIGH>;
/* use pck1 for the master clock of ov2640 */
clocks = <&pck1>;
clock-names = "xvclk";
assigned-clocks = <&pck1>;
assigned-clock-rates = <25000000>;
port {
ov2640_0: endpoint {
remote-endpoint = <&isi_0>;
bus-width = <8>;
};
};
};
};
usart1: serial@f0020000 {
dmas = <0>, <0>; /* Do not use DMA for usart1 */
pinctrl-names = "default";
@ -60,8 +83,12 @@
};
isi: isi@f0034000 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_isi &pinctrl_isi_pck_as_mck &pinctrl_isi_power &pinctrl_isi_reset>;
port {
isi_0: endpoint {
remote-endpoint = <&ov2640_0>;
bus-width = <8>;
};
};
};
mmc1: mmc@f8000000 {
@ -117,12 +144,17 @@
<AT91_PIOD 30 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PD30 periph B */
};
pinctrl_isi_reset: isi_reset-0 {
pinctrl_pck1_as_isi_mck: pck1_as_isi_mck-0 {
atmel,pins =
<AT91_PIOD 31 AT91_PERIPH_B AT91_PINCTRL_NONE>; /* PD31 periph B ISI_MCK */
};
pinctrl_sensor_reset: sensor_reset-0 {
atmel,pins =
<AT91_PIOE 24 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>; /* PE24 gpio */
};
pinctrl_isi_power: isi_power-0 {
pinctrl_sensor_power: sensor_power-0 {
atmel,pins =
<AT91_PIOE 29 AT91_PERIPH_GPIO AT91_PINCTRL_NONE>; /* PE29 gpio */
};

10
arch/arm/boot/dts/sama5d4.dtsi
View file

@ -103,6 +103,11 @@
};
};
ns_sram: sram@00210000 {
compatible = "mmio-sram";
reg = <0x00210000 0x10000>;
};
ahb {
compatible = "simple-bus";
#address-cells = <1>;
@ -870,6 +875,11 @@
status = "disabled";
};
sfr: sfr@f8028000 {
compatible = "atmel,sama5d4-sfr", "syscon";
reg = <0xf8028000 0x60>;
};
mmc1: mmc@fc000000 {
compatible = "atmel,hsmci";
reg = <0xfc000000 0x600>;

19
arch/arm/mach-at91/include/mach/debug-macro.S → arch/arm/include/debug/at91.S
View file

@ -1,6 +1,4 @@
/*
* arch/arm/mach-at91/include/mach/debug-macro.S
*
* Copyright (C) 2003-2005 SAN People
*
* Debugging macro include header
@ -11,18 +9,23 @@
*
*/
#include <mach/hardware.h>
#include <mach/at91_dbgu.h>
#if defined(CONFIG_AT91_DEBUG_LL_DBGU0)
#define AT91_DBGU AT91_BASE_DBGU0
#define AT91_DBGU 0xfffff200 /* AT91_BASE_DBGU0 */
#elif defined(CONFIG_AT91_DEBUG_LL_DBGU1)
#define AT91_DBGU AT91_BASE_DBGU1
#define AT91_DBGU 0xffffee00 /* AT91_BASE_DBGU1 */
#else
/* On sama5d4, use USART3 as low level serial console */
#define AT91_DBGU SAMA5D4_BASE_USART3
#define AT91_DBGU 0xfc00c000 /* SAMA5D4_BASE_USART3 */
#endif
/* Keep in sync with mach-at91/include/mach/hardware.h */
#define AT91_IO_P2V(x) ((x) - 0x01000000)
#define AT91_DBGU_SR (0x14) /* Status Register */
#define AT91_DBGU_THR (0x1c) /* Transmitter Holding Register */
#define AT91_DBGU_TXRDY (1 << 1) /* Transmitter Ready */
#define AT91_DBGU_TXEMPTY (1 << 9) /* Transmitter Empty */
.macro addruart, rp, rv, tmp
ldr \rp, =AT91_DBGU @ System peripherals (phys address)
ldr \rv, =AT91_IO_P2V(AT91_DBGU) @ System peripherals (virt address)

9
arch/arm/mach-at91/Kconfig
View file

@ -174,18 +174,11 @@ config SOC_AT91SAM9N12
# ----------------------------------------------------------
endif # SOC_SAM_V4_V5
config MACH_AT91RM9200_DT
def_bool SOC_AT91RM9200
config MACH_AT91SAM9_DT
def_bool SOC_AT91SAM9
# ----------------------------------------------------------
comment "AT91 Feature Selections"
config AT91_SLOW_CLOCK
bool "Suspend-to-RAM disables main oscillator"
select SRAM
depends on SUSPEND
help
Select this if you want Suspend-to-RAM to save the most power

6
arch/arm/mach-at91/Makefile
View file

@ -2,7 +2,7 @@
# Makefile for the linux kernel.
#
obj-y := setup.o sysirq_mask.o
obj-y := setup.o
obj-$(CONFIG_SOC_AT91SAM9) += sam9_smc.o
@ -19,8 +19,8 @@ obj-$(CONFIG_SOC_SAMA5D3) += sama5d3.o
obj-$(CONFIG_SOC_SAMA5D4) += sama5d4.o
# AT91SAM board with device-tree
obj-$(CONFIG_MACH_AT91RM9200_DT) += board-dt-rm9200.o
obj-$(CONFIG_MACH_AT91SAM9_DT) += board-dt-sam9.o
obj-$(CONFIG_SOC_AT91RM9200) += board-dt-rm9200.o
obj-$(CONFIG_SOC_AT91SAM9) += board-dt-sam9.o
# SAMA5 board with device-tree
obj-$(CONFIG_SOC_SAMA5) += board-dt-sama5.o

15
arch/arm/mach-at91/at91rm9200.c
View file

@ -21,14 +21,6 @@
#include "soc.h"
#include "generic.h"
static void at91rm9200_idle(void)
{
/*
* Disable the processor clock. The processor will be automatically
* re-enabled by an interrupt or by a reset.
*/
at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
}
static void at91rm9200_restart(enum reboot_mode reboot_mode, const char *cmd)
{
@ -42,11 +34,6 @@ static void at91rm9200_restart(enum reboot_mode reboot_mode, const char *cmd)
/* --------------------------------------------------------------------
* AT91RM9200 processor initialization
* -------------------------------------------------------------------- */
static void __init at91rm9200_map_io(void)
{
/* Map peripherals */
at91_init_sram(0, AT91RM9200_SRAM_BASE, AT91RM9200_SRAM_SIZE);
}
static void __init at91rm9200_initialize(void)
{
@ -54,8 +41,6 @@ static void __init at91rm9200_initialize(void)
arm_pm_restart = at91rm9200_restart;
}
AT91_SOC_START(at91rm9200)
.map_io = at91rm9200_map_io,
.init = at91rm9200_initialize,
AT91_SOC_END

29
arch/arm/mach-at91/at91sam9260.c
View file

@ -22,40 +22,11 @@
* AT91SAM9260 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9xe_map_io(void)
{
unsigned long sram_size;
switch (at91_soc_initdata.cidr & AT91_CIDR_SRAMSIZ) {
case AT91_CIDR_SRAMSIZ_32K:
sram_size = 2 * SZ_16K;
break;
case AT91_CIDR_SRAMSIZ_16K:
default:
sram_size = SZ_16K;
}
at91_init_sram(0, AT91SAM9XE_SRAM_BASE, sram_size);
}
static void __init at91sam9260_map_io(void)
{
if (cpu_is_at91sam9xe())
at91sam9xe_map_io();
else if (cpu_is_at91sam9g20())
at91_init_sram(0, AT91SAM9G20_SRAM_BASE, AT91SAM9G20_SRAM_SIZE);
else
at91_init_sram(0, AT91SAM9260_SRAM_BASE, AT91SAM9260_SRAM_SIZE);
}
static void __init at91sam9260_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtt(AT91SAM9260_BASE_RTT);
}
AT91_SOC_START(at91sam9260)
.map_io = at91sam9260_map_io,
.init = at91sam9260_initialize,
AT91_SOC_END

11
arch/arm/mach-at91/at91sam9261.c
View file

@ -21,22 +21,11 @@
* AT91SAM9261 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9261_map_io(void)
{
if (cpu_is_at91sam9g10())
at91_init_sram(0, AT91SAM9G10_SRAM_BASE, AT91SAM9G10_SRAM_SIZE);
else
at91_init_sram(0, AT91SAM9261_SRAM_BASE, AT91SAM9261_SRAM_SIZE);
}
static void __init at91sam9261_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtt(AT91SAM9261_BASE_RTT);
}
AT91_SOC_START(at91sam9261)
.map_io = at91sam9261_map_io,
.init = at91sam9261_initialize,
AT91_SOC_END

10
arch/arm/mach-at91/at91sam9263.c
View file

@ -20,21 +20,11 @@
* AT91SAM9263 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9263_map_io(void)
{
at91_init_sram(0, AT91SAM9263_SRAM0_BASE, AT91SAM9263_SRAM0_SIZE);
at91_init_sram(1, AT91SAM9263_SRAM1_BASE, AT91SAM9263_SRAM1_SIZE);
}
static void __init at91sam9263_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT0);
at91_sysirq_mask_rtt(AT91SAM9263_BASE_RTT1);
}
AT91_SOC_START(at91sam9263)
.map_io = at91sam9263_map_io,
.init = at91sam9263_initialize,
AT91_SOC_END

11
arch/arm/mach-at91/at91sam9g45.c
View file

@ -11,7 +11,6 @@
*/
#include <asm/system_misc.h>
#include <asm/irq.h>
#include <mach/hardware.h>
#include "soc.h"
@ -20,21 +19,11 @@
/* --------------------------------------------------------------------
* AT91SAM9G45 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9g45_map_io(void)
{
at91_init_sram(0, AT91SAM9G45_SRAM_BASE, AT91SAM9G45_SRAM_SIZE);
}
static void __init at91sam9g45_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtc(AT91SAM9G45_BASE_RTC);
at91_sysirq_mask_rtt(AT91SAM9G45_BASE_RTT);
}
AT91_SOC_START(at91sam9g45)
.map_io = at91sam9g45_map_io,
.init = at91sam9g45_initialize,
AT91_SOC_END

12
arch/arm/mach-at91/at91sam9n12.c
View file

@ -16,17 +16,5 @@
* AT91SAM9N12 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9n12_map_io(void)
{
at91_init_sram(0, AT91SAM9N12_SRAM_BASE, AT91SAM9N12_SRAM_SIZE);
}
static void __init at91sam9n12_initialize(void)
{
at91_sysirq_mask_rtc(AT91SAM9N12_BASE_RTC);
}
AT91_SOC_START(at91sam9n12)
.map_io = at91sam9n12_map_io,
.init = at91sam9n12_initialize,
AT91_SOC_END

22
arch/arm/mach-at91/at91sam9rl.c
View file

@ -10,7 +10,6 @@
*/
#include <asm/system_misc.h>
#include <asm/irq.h>
#include <mach/cpu.h>
#include <mach/at91_dbgu.h>
#include <mach/hardware.h>
@ -22,32 +21,11 @@
* AT91SAM9RL processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9rl_map_io(void)
{
unsigned long sram_size;
switch (at91_soc_initdata.cidr & AT91_CIDR_SRAMSIZ) {
case AT91_CIDR_SRAMSIZ_32K:
sram_size = 2 * SZ_16K;
break;
case AT91_CIDR_SRAMSIZ_16K:
default:
sram_size = SZ_16K;
}
/* Map SRAM */
at91_init_sram(0, AT91SAM9RL_SRAM_BASE, sram_size);
}
static void __init at91sam9rl_initialize(void)
{
arm_pm_idle = at91sam9_idle;
at91_sysirq_mask_rtc(AT91SAM9RL_BASE_RTC);
at91_sysirq_mask_rtt(AT91SAM9RL_BASE_RTT);
}
AT91_SOC_START(at91sam9rl)
.map_io = at91sam9rl_map_io,
.init = at91sam9rl_initialize,
AT91_SOC_END

16
arch/arm/mach-at91/at91sam9x5.c
View file

@ -16,21 +16,5 @@
* AT91SAM9x5 processor initialization
* -------------------------------------------------------------------- */
static void __init at91sam9x5_map_io(void)
{
at91_init_sram(0, AT91SAM9X5_SRAM_BASE, AT91SAM9X5_SRAM_SIZE);
}
static void __init at91sam9x5_initialize(void)
{
at91_sysirq_mask_rtc(AT91SAM9X5_BASE_RTC);
}
/* --------------------------------------------------------------------
* Interrupt initialization
* -------------------------------------------------------------------- */
AT91_SOC_START(at91sam9x5)
.map_io = at91sam9x5_map_io,
.init = at91sam9x5_initialize,
AT91_SOC_END

13
arch/arm/mach-at91/board-dt-rm9200.c
View file

@ -14,6 +14,7 @@
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/clk-provider.h>
#include <asm/setup.h>
@ -30,6 +31,15 @@ static void __init at91rm9200_dt_timer_init(void)
at91rm9200_timer_init();
}
static void __init rm9200_dt_device_init(void)
{
at91_rm9200_pm_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *at91rm9200_dt_board_compat[] __initdata = {
"atmel,at91rm9200",
NULL
@ -38,6 +48,7 @@ static const char *at91rm9200_dt_board_compat[] __initdata = {
DT_MACHINE_START(at91rm9200_dt, "Atmel AT91RM9200 (Device Tree)")
.init_time = at91rm9200_dt_timer_init,
.map_io = at91_map_io,
.init_early = at91rm9200_dt_initialize,
.init_early = at91_dt_initialize,
.init_machine = rm9200_dt_device_init,
.dt_compat = at91rm9200_dt_board_compat,
MACHINE_END

27
arch/arm/mach-at91/board-dt-sam9.c
View file

@ -13,6 +13,7 @@
#include <linux/gpio.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/of_platform.h>
#include <linux/clk-provider.h>
#include <asm/setup.h>
@ -23,6 +24,12 @@
#include "generic.h"
static void __init sam9_dt_device_init(void)
{
at91_sam9260_pm_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *at91_dt_board_compat[] __initdata = {
"atmel,at91sam9",
NULL
@ -32,5 +39,25 @@ DT_MACHINE_START(at91sam_dt, "Atmel AT91SAM (Device Tree)")
/* Maintainer: Atmel */
.map_io = at91_map_io,
.init_early = at91_dt_initialize,
.init_machine = sam9_dt_device_init,
.dt_compat = at91_dt_board_compat,
MACHINE_END
static void __init sam9g45_dt_device_init(void)
{
at91_sam9g45_pm_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}
static const char *at91_9g45_board_compat[] __initconst = {
"atmel,at91sam9g45",
NULL
};
DT_MACHINE_START(at91sam9g45_dt, "Atmel AT91SAM9G45")
/* Maintainer: Atmel */
.map_io = at91_map_io,
.init_early = at91_dt_initialize,
.init_machine = sam9g45_dt_device_init,
.dt_compat = at91_9g45_board_compat,
MACHINE_END

1
arch/arm/mach-at91/board-dt-sama5.c
View file

@ -28,6 +28,7 @@
static void __init sama5_dt_device_init(void)
{
at91_sam9260_pm_init();
of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
}

21
arch/arm/mach-at91/generic.h
View file

@ -17,24 +17,29 @@
/* Map io */
extern void __init at91_map_io(void);
extern void __init at91_alt_map_io(void);
extern void __init at91_init_sram(int bank, unsigned long base,
unsigned int length);
/* Processors */
extern void __init at91rm9200_set_type(int type);
extern void __init at91rm9200_dt_initialize(void);
extern void __init at91_dt_initialize(void);
/* Interrupts */
extern void __init at91_sysirq_mask_rtc(u32 rtc_base);
extern void __init at91_sysirq_mask_rtt(u32 rtt_base);
/* Timer */
extern void at91rm9200_timer_init(void);
/* idle */
extern void at91rm9200_idle(void);
extern void at91sam9_idle(void);
/* Matrix */
extern void at91_ioremap_matrix(u32 base_addr);
#ifdef CONFIG_PM
extern void __init at91_rm9200_pm_init(void);
extern void __init at91_sam9260_pm_init(void);
extern void __init at91_sam9g45_pm_init(void);
#else
void __init at91_rm9200_pm_init(void) { }
void __init at91_sam9260_pm_init(void) { }
void __init at91_sam9g45_pm_init(void) { }
#endif
#endif /* _AT91_GENERIC_H */

80
arch/arm/mach-at91/include/mach/at91_pio.h
View file

@ -1,80 +0,0 @@
/*
* arch/arm/mach-at91/include/mach/at91_pio.h
*
* Copyright (C) 2005 Ivan Kokshaysky
* Copyright (C) SAN People
*
* Parallel I/O Controller (PIO) - System peripherals registers.
* Based on AT91RM9200 datasheet revision E.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AT91_PIO_H
#define AT91_PIO_H
#define PIO_PER 0x00 /* Enable Register */
#define PIO_PDR 0x04 /* Disable Register */
#define PIO_PSR 0x08 /* Status Register */
#define PIO_OER 0x10 /* Output Enable Register */
#define PIO_ODR 0x14 /* Output Disable Register */
#define PIO_OSR 0x18 /* Output Status Register */
#define PIO_IFER 0x20 /* Glitch Input Filter Enable */
#define PIO_IFDR 0x24 /* Glitch Input Filter Disable */
#define PIO_IFSR 0x28 /* Glitch Input Filter Status */
#define PIO_SODR 0x30 /* Set Output Data Register */
#define PIO_CODR 0x34 /* Clear Output Data Register */
#define PIO_ODSR 0x38 /* Output Data Status Register */
#define PIO_PDSR 0x3c /* Pin Data Status Register */
#define PIO_IER 0x40 /* Interrupt Enable Register */
#define PIO_IDR 0x44 /* Interrupt Disable Register */
#define PIO_IMR 0x48 /* Interrupt Mask Register */
#define PIO_ISR 0x4c /* Interrupt Status Register */
#define PIO_MDER 0x50 /* Multi-driver Enable Register */
#define PIO_MDDR 0x54 /* Multi-driver Disable Register */
#define PIO_MDSR 0x58 /* Multi-driver Status Register */
#define PIO_PUDR 0x60 /* Pull-up Disable Register */
#define PIO_PUER 0x64 /* Pull-up Enable Register */
#define PIO_PUSR 0x68 /* Pull-up Status Register */
#define PIO_ASR 0x70 /* Peripheral A Select Register */
#define PIO_ABCDSR1 0x70 /* Peripheral ABCD Select Register 1 [some sam9 only] */
#define PIO_BSR 0x74 /* Peripheral B Select Register */
#define PIO_ABCDSR2 0x74 /* Peripheral ABCD Select Register 2 [some sam9 only] */
#define PIO_ABSR 0x78 /* AB Status Register */
#define PIO_IFSCDR 0x80 /* Input Filter Slow Clock Disable Register */
#define PIO_IFSCER 0x84 /* Input Filter Slow Clock Enable Register */
#define PIO_IFSCSR 0x88 /* Input Filter Slow Clock Status Register */
#define PIO_SCDR 0x8c /* Slow Clock Divider Debouncing Register */
#define PIO_SCDR_DIV (0x3fff << 0) /* Slow Clock Divider Mask */
#define PIO_PPDDR 0x90 /* Pad Pull-down Disable Register */
#define PIO_PPDER 0x94 /* Pad Pull-down Enable Register */
#define PIO_PPDSR 0x98 /* Pad Pull-down Status Register */
#define PIO_OWER 0xa0 /* Output Write Enable Register */
#define PIO_OWDR 0xa4 /* Output Write Disable Register */
#define PIO_OWSR 0xa8 /* Output Write Status Register */
#define PIO_AIMER 0xb0 /* Additional Interrupt Modes Enable Register */
#define PIO_AIMDR 0xb4 /* Additional Interrupt Modes Disable Register */
#define PIO_AIMMR 0xb8 /* Additional Interrupt Modes Mask Register */
#define PIO_ESR 0xc0 /* Edge Select Register */
#define PIO_LSR 0xc4 /* Level Select Register */
#define PIO_ELSR 0xc8 /* Edge/Level Status Register */
#define PIO_FELLSR 0xd0 /* Falling Edge/Low Level Select Register */
#define PIO_REHLSR 0xd4 /* Rising Edge/ High Level Select Register */
#define PIO_FRLHSR 0xd8 /* Fall/Rise - Low/High Status Register */
#define PIO_SCHMITT 0x100 /* Schmitt Trigger Register */
#define ABCDSR_PERIPH_A 0x0
#define ABCDSR_PERIPH_B 0x1
#define ABCDSR_PERIPH_C 0x2
#define ABCDSR_PERIPH_D 0x3
#define SAMA5D3_PIO_DRIVER1 0x118 /*PIO Driver 1 register offset*/
#define SAMA5D3_PIO_DRIVER2 0x11C /*PIO Driver 2 register offset*/
#define AT91SAM9X5_PIO_DRIVER1 0x114 /*PIO Driver 1 register offset*/
#define AT91SAM9X5_PIO_DRIVER2 0x118 /*PIO Driver 2 register offset*/
#endif

35
arch/arm/mach-at91/include/mach/at91_rtt.h
View file

@ -1,35 +0,0 @@
/*
* arch/arm/mach-at91/include/mach/at91_rtt.h
*
* Copyright (C) 2007 Andrew Victor
* Copyright (C) 2007 Atmel Corporation.
*
* Real-time Timer (RTT) - System peripherals regsters.
* Based on AT91SAM9261 datasheet revision D.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef AT91_RTT_H
#define AT91_RTT_H
#define AT91_RTT_MR 0x00 /* Real-time Mode Register */
#define AT91_RTT_RTPRES (0xffff << 0) /* Real-time Timer Prescaler Value */
#define AT91_RTT_ALMIEN (1 << 16) /* Alarm Interrupt Enable */
#define AT91_RTT_RTTINCIEN (1 << 17) /* Real Time Timer Increment Interrupt Enable */
#define AT91_RTT_RTTRST (1 << 18) /* Real Time Timer Restart */
#define AT91_RTT_AR 0x04 /* Real-time Alarm Register */
#define AT91_RTT_ALMV (0xffffffff) /* Alarm Value */
#define AT91_RTT_VR 0x08 /* Real-time Value Register */
#define AT91_RTT_CRTV (0xffffffff) /* Current Real-time Value */
#define AT91_RTT_SR 0x0c /* Real-time Status Register */
#define AT91_RTT_ALMS (1 << 0) /* Real-time Alarm Status */
#define AT91_RTT_RTTINC (1 << 1) /* Real-time Timer Increment */
#endif

26
arch/arm/mach-at91/include/mach/memory.h
View file

@ -1,26 +0,0 @@
/*
* arch/arm/mach-at91/include/mach/memory.h
*
* Copyright (C) 2004 SAN People
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __ASM_ARCH_MEMORY_H
#define __ASM_ARCH_MEMORY_H
#include <mach/hardware.h>
#endif

111
arch/arm/mach-at91/pm.c
View file

@ -14,9 +14,12 @@
#include <linux/suspend.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/genalloc.h>
#include <linux/interrupt.h>
#include <linux/sysfs.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/clk/at91_pmc.h>
@ -32,6 +35,11 @@
#include "generic.h"
#include "pm.h"
static struct {
unsigned long uhp_udp_mask;
int memctrl;
} at91_pm_data;
static void (*at91_pm_standby)(void);
static int at91_pm_valid_state(suspend_state_t state)
@ -71,17 +79,9 @@ static int at91_pm_verify_clocks(void)
scsr = at91_pmc_read(AT91_PMC_SCSR);
/* USB must not be using PLLB */
if (cpu_is_at91rm9200()) {
if ((scsr & (AT91RM9200_PMC_UHP | AT91RM9200_PMC_UDP)) != 0) {
pr_err("AT91: PM - Suspend-to-RAM with USB still active\n");
return 0;
}
} else if (cpu_is_at91sam9260() || cpu_is_at91sam9261() || cpu_is_at91sam9263()
|| cpu_is_at91sam9g20() || cpu_is_at91sam9g10()) {
if ((scsr & (AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP)) != 0) {
pr_err("AT91: PM - Suspend-to-RAM with USB still active\n");
return 0;
}
if ((scsr & at91_pm_data.uhp_udp_mask) != 0) {
pr_err("AT91: PM - Suspend-to-RAM with USB still active\n");
return 0;
}
/* PCK0..PCK3 must be disabled, or configured to use clk32k */
@ -149,18 +149,13 @@ static int at91_pm_enter(suspend_state_t state)
* turning off the main oscillator; reverse on wakeup.
*/
if (slow_clock) {
int memctrl = AT91_MEMCTRL_SDRAMC;
if (cpu_is_at91rm9200())
memctrl = AT91_MEMCTRL_MC;
else if (cpu_is_at91sam9g45())
memctrl = AT91_MEMCTRL_DDRSDR;
#ifdef CONFIG_AT91_SLOW_CLOCK
/* copy slow_clock handler to SRAM, and call it */
memcpy(slow_clock, at91_slow_clock, at91_slow_clock_sz);
#endif
slow_clock(at91_pmc_base, at91_ramc_base[0],
at91_ramc_base[1], memctrl);
at91_ramc_base[1],
at91_pm_data.memctrl);
break;
} else {
pr_info("AT91: PM - no slow clock mode enabled ...\n");
@ -229,23 +224,85 @@ void at91_pm_set_standby(void (*at91_standby)(void))
}
}
static int __init at91_pm_init(void)
#ifdef CONFIG_AT91_SLOW_CLOCK
static void __init at91_pm_sram_init(void)
{
struct gen_pool *sram_pool;
phys_addr_t sram_pbase;
unsigned long sram_base;
struct device_node *node;
struct platform_device *pdev;
node = of_find_compatible_node(NULL, NULL, "mmio-sram");
if (!node) {
pr_warn("%s: failed to find sram node!\n", __func__);
return;
}
pdev = of_find_device_by_node(node);
if (!pdev) {
pr_warn("%s: failed to find sram device!\n", __func__);
goto put_node;
}
sram_pool = dev_get_gen_pool(&pdev->dev);
if (!sram_pool) {
pr_warn("%s: sram pool unavailable!\n", __func__);
goto put_node;
}
sram_base = gen_pool_alloc(sram_pool, at91_slow_clock_sz);
if (!sram_base) {
pr_warn("%s: unable to alloc ocram!\n", __func__);
goto put_node;
}
sram_pbase = gen_pool_virt_to_phys(sram_pool, sram_base);
slow_clock = __arm_ioremap_exec(sram_pbase, at91_slow_clock_sz, false);
put_node:
of_node_put(node);
}
#endif
static void __init at91_pm_init(void)
{
#ifdef CONFIG_AT91_SLOW_CLOCK
slow_clock = (void *) (AT91_IO_VIRT_BASE - at91_slow_clock_sz);
at91_pm_sram_init();
#endif
pr_info("AT91: Power Management%s\n", (slow_clock ? " (with slow clock mode)" : ""));
/* AT91RM9200 SDRAM low-power mode cannot be used with self-refresh. */
if (cpu_is_at91rm9200())
at91_ramc_write(0, AT91RM9200_SDRAMC_LPR, 0);
if (at91_cpuidle_device.dev.platform_data)
platform_device_register(&at91_cpuidle_device);
suspend_set_ops(&at91_pm_ops);
return 0;
}
arch_initcall(at91_pm_init);
void __init at91_rm9200_pm_init(void)
{
/*
* AT91RM9200 SDRAM low-power mode cannot be used with self-refresh.
*/
at91_ramc_write(0, AT91RM9200_SDRAMC_LPR, 0);
at91_pm_data.uhp_udp_mask = AT91RM9200_PMC_UHP | AT91RM9200_PMC_UDP;
at91_pm_data.memctrl = AT91_MEMCTRL_MC;
at91_pm_init();
}
void __init at91_sam9260_pm_init(void)
{
at91_pm_data.memctrl = AT91_MEMCTRL_SDRAMC;
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP | AT91SAM926x_PMC_UDP;
return at91_pm_init();
}
void __init at91_sam9g45_pm_init(void)
{
at91_pm_data.uhp_udp_mask = AT91SAM926x_PMC_UHP;
at91_pm_data.memctrl = AT91_MEMCTRL_DDRSDR;
return at91_pm_init();
}

12
arch/arm/mach-at91/sama5d3.c
View file

@ -25,17 +25,5 @@
* AT91SAM9x5 processor initialization
* -------------------------------------------------------------------- */
static void __init sama5d3_map_io(void)
{
at91_init_sram(0, SAMA5D3_SRAM_BASE, SAMA5D3_SRAM_SIZE);
}
static void __init sama5d3_initialize(void)
{
at91_sysirq_mask_rtc(SAMA5D3_BASE_RTC);
}
AT91_SOC_START(sama5d3)
.map_io = sama5d3_map_io,
.init = sama5d3_initialize,
AT91_SOC_END

1
arch/arm/mach-at91/sama5d4.c
View file

@ -56,7 +56,6 @@ static struct map_desc at91_io_desc[] __initdata = {
static void __init sama5d4_map_io(void)
{
iotable_init(at91_io_desc, ARRAY_SIZE(at91_io_desc));
at91_init_sram(0, SAMA5D4_NS_SRAM_BASE, SAMA5D4_NS_SRAM_SIZE);
}
AT91_SOC_START(sama5d4)

38
arch/arm/mach-at91/setup.c
View file

@ -31,40 +31,9 @@ struct at91_init_soc __initdata at91_boot_soc;
struct at91_socinfo at91_soc_initdata;
EXPORT_SYMBOL(at91_soc_initdata);
void __init at91rm9200_set_type(int type)
{
if (type == ARCH_REVISON_9200_PQFP)
at91_soc_initdata.subtype = AT91_SOC_RM9200_PQFP;
else
at91_soc_initdata.subtype = AT91_SOC_RM9200_BGA;
pr_info("filled in soc subtype: %s\n",
at91_get_soc_subtype(&at91_soc_initdata));
}
void __iomem *at91_ramc_base[2];
EXPORT_SYMBOL_GPL(at91_ramc_base);
static struct map_desc sram_desc[2] __initdata;
void __init at91_init_sram(int bank, unsigned long base, unsigned int length)
{
struct map_desc *desc = &sram_desc[bank];
desc->virtual = (unsigned long)AT91_IO_VIRT_BASE - length;
if (bank > 0)
desc->virtual -= sram_desc[bank - 1].length;
desc->pfn = __phys_to_pfn(base);
desc->length = length;
desc->type = MT_MEMORY_RWX_NONCACHED;
pr_info("sram at 0x%lx of 0x%x mapped at 0x%lx\n",
base, length, desc->virtual);
iotable_init(desc, 1);
}
static struct map_desc at91_io_desc __initdata __maybe_unused = {
.virtual = (unsigned long)AT91_VA_BASE_SYS,
.pfn = __phys_to_pfn(AT91_BASE_SYS),
@ -429,13 +398,6 @@ static void at91_dt_ramc(void)
at91_pm_set_standby(standby);
}
void __init at91rm9200_dt_initialize(void)
{
at91_dt_ramc();
at91_boot_soc.init();
}
void __init at91_dt_initialize(void)
{
at91_dt_ramc();

75
arch/arm/mach-at91/sysirq_mask.c
View file

@ -1,75 +0,0 @@
/*
* sysirq_mask.c - System-interrupt masking
*
* Copyright (C) 2013 Johan Hovold <jhovold@gmail.com>
*
* Functions to disable system interrupts from backup-powered peripherals.
*
* The RTC and RTT-peripherals are generally powered by backup power (VDDBU)
* and are not reset on wake-up, user, watchdog or software reset. This means
* that their interrupts may be enabled during early boot (e.g. after a user
* reset).
*
* As the RTC and RTT share the system-interrupt line with the PIT, an
* interrupt occurring before a handler has been installed would lead to the
* system interrupt being disabled and prevent the system from booting.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#include <linux/io.h>
#include <mach/at91_rtt.h>
#include "generic.h"
#define AT91_RTC_IDR 0x24 /* Interrupt Disable Register */
#define AT91_RTC_IMR 0x28 /* Interrupt Mask Register */
#define AT91_RTC_IRQ_MASK 0x1f /* Available IRQs mask */
void __init at91_sysirq_mask_rtc(u32 rtc_base)
{
void __iomem *base;
base = ioremap(rtc_base, 64);
if (!base)
return;
/*
* sam9x5 SoCs have the following errata:
* "RTC: Interrupt Mask Register cannot be used
* Interrupt Mask Register read always returns 0."
*
* Hence we're not relying on IMR values to disable
* interrupts.
*/
writel_relaxed(AT91_RTC_IRQ_MASK, base + AT91_RTC_IDR);
(void)readl_relaxed(base + AT91_RTC_IMR); /* flush */
iounmap(base);
}
void __init at91_sysirq_mask_rtt(u32 rtt_base)
{
void __iomem *base;
void __iomem *reg;
u32 mode;
base = ioremap(rtt_base, 16);
if (!base)
return;
reg = base + AT91_RTT_MR;
mode = readl_relaxed(reg);
if (mode & (AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN)) {
pr_info("AT91: Disabling rtt irq\n");
mode &= ~(AT91_RTT_ALMIEN | AT91_RTT_RTTINCIEN);
writel_relaxed(mode, reg);
(void)readl_relaxed(reg); /* flush */
}
iounmap(base);
}

9
drivers/clk/at91/pmc.c
View file

@ -27,6 +27,15 @@
void __iomem *at91_pmc_base;
EXPORT_SYMBOL_GPL(at91_pmc_base);
void at91rm9200_idle(void)
{
/*
* Disable the processor clock. The processor will be automatically
* re-enabled by an interrupt or by a reset.
*/
at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);
}
void at91sam9_idle(void)
{
at91_pmc_write(AT91_PMC_SCDR, AT91_PMC_PCK);

28
drivers/rtc/Kconfig
View file

@ -1141,34 +1141,6 @@ config RTC_DRV_AT91SAM9
probably want to use the real RTC block instead of the "RTT as an
RTC" driver.
config RTC_DRV_AT91SAM9_RTT
int
range 0 1
default 0
depends on RTC_DRV_AT91SAM9
help
This option is only relevant for legacy board support and
won't be used when booting a DT board.
More than one RTT module is available. You can choose which
one will be used as an RTC. The default of zero is normally
OK to use, though some systems use that for non-RTC purposes.
config RTC_DRV_AT91SAM9_GPBR
int
range 0 3
default 0
prompt "Backup Register Number"
depends on RTC_DRV_AT91SAM9
help
This option is only relevant for legacy board support and
won't be used when booting a DT board.
The RTC driver needs to use one of the General Purpose Backup
Registers (GPBRs) as well as the RTT. You can choose which one
will be used. The default of zero is normally OK to use, but
on some systems other software needs to use that register.
config RTC_DRV_AU1XXX
tristate "Au1xxx Counter0 RTC support"
depends on MIPS_ALCHEMY