[patch 2/6] SM501 MFD driver updates

From: Ben Dooks
Date: Wed Jun 13 2007 - 09:39:07 EST


SM501: initialise SDRAM clock before bus clocks

This init sequence of setting the SDRAM clock before the
bus clock is recommend by Silicon Motion to stop problems
with writes not sticking into registers.

Signed-off-by: Vincent Sanders <vince@xxxxxxxxxxxx>
Signed-off-by: Ben Dooks <ben-linux@xxxxxxxxx>

Index: linux-2.6.21-quilt8/drivers/mfd/sm501.c
===================================================================
--- linux-2.6.21-quilt8.orig/drivers/mfd/sm501.c 2007-06-07 12:12:38.000000000 +0100
+++ linux-2.6.21-quilt8/drivers/mfd/sm501.c 2007-06-07 12:13:03.000000000 +0100
@@ -833,15 +833,15 @@ static void sm501_init_regs(struct sm501
sm501_init_reg(sm, SM501_GPIO31_0_CONTROL, &init->gpio_low);
sm501_init_reg(sm, SM501_GPIO63_32_CONTROL, &init->gpio_high);

- if (init->mclk) {
- dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
- sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
- }
-
if (init->m1xclk) {
dev_info(sm->dev, "setting M1XCLK to %ld\n", init->m1xclk);
sm501_set_clock(sm->dev, SM501_CLOCK_M1XCLK, init->m1xclk);
}
+
+ if (init->mclk) {
+ dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
+ sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
+ }
}

static unsigned int sm501_mem_local[] = {

--
-
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