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sh: reduce Migo-R smc91x overruns

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Improve Migo-R ethernet performance by reducing smc91x overruns.
This is done by enabling SMC91X_NOWAIT and optimizing CS4 setup.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm 2008-10-09 18:41:34 +09:00 committed by Paul Mundt
parent 9a19eb2a66
commit a30c89ad41
2 changed files with 6 additions and 2 deletions
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6
arch/sh/boards/mach-migor/setup.c
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@ -37,7 +37,7 @@
*/
static struct smc91x_platdata smc91x_info = {
.flags = SMC91X_USE_16BIT,
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
};
static struct resource smc91x_eth_resources[] = {
@ -463,8 +463,10 @@ static int __init migor_devices_setup(void)
gpio_direction_output(GPIO_PTJ5, 1);
gpio_export(GPIO_PTJ5, 0);
/* SMC91C111 */
/* SMC91C111 - Enable IRQ0, Setup CS4 for 16-bit fast access */
gpio_request(GPIO_FN_IRQ0, NULL);
ctrl_outl(0x00003400, BSC_CS4BCR);
ctrl_outl(0x00110080, BSC_CS4WCR);
/* KEYSC */
clk_always_enable("mstp214"); /* KEYSC */

2
arch/sh/include/asm/migor.h
View file

@ -52,7 +52,9 @@
#define PORT_HIZCRB 0xa405015a
#define PORT_HIZCRC 0xa405015c
#define BSC_CS4BCR 0xfec10010
#define BSC_CS6ABCR 0xfec1001c
#define BSC_CS4WCR 0xfec10030
#include <video/sh_mobile_lcdc.h>