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authorMagnus Damm <damm@igel.co.jp>2008-10-09 13:41:34 +0400
committerPaul Mundt <lethal@linux-sh.org>2008-10-20 06:38:35 +0400
commita30c89ad41099f58922e0941e346e7c4371655b9 (patch)
tree14db08997fb568f02b75cab6452c9c413c54bc92 /arch
parent9a19eb2a6607f2f6329efb3c4637fe23afae2cd7 (diff)
downloadlinux-a30c89ad41099f58922e0941e346e7c4371655b9.tar.xz
sh: reduce Migo-R smc91x overruns
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>
Diffstat (limited to 'arch')
-rw-r--r--arch/sh/boards/mach-migor/setup.c6
-rw-r--r--arch/sh/include/asm/migor.h2
2 files changed, 6 insertions, 2 deletions
diff --git a/arch/sh/boards/mach-migor/setup.c b/arch/sh/boards/mach-migor/setup.c
index 003ce837734d..3e3cc9da34ad 100644
--- a/arch/sh/boards/mach-migor/setup.c
+++ b/arch/sh/boards/mach-migor/setup.c
@@ -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 */
diff --git a/arch/sh/include/asm/migor.h b/arch/sh/include/asm/migor.h
index 70596d38fd67..e451f0229e00 100644
--- a/arch/sh/include/asm/migor.h
+++ b/arch/sh/include/asm/migor.h
@@ -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>