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@simtec.co.uk> Signed-off-by: Ben Dooks <ben-linux@fluff.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
此提交包含在:
@@ -843,15 +843,15 @@ static void sm501_init_regs(struct sm501_devdata *sm,
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sm501_init_reg(sm, SM501_GPIO31_0_CONTROL, &init->gpio_low);
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sm501_init_reg(sm, SM501_GPIO63_32_CONTROL, &init->gpio_high);
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if (init->mclk) {
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dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
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sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
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}
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if (init->m1xclk) {
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dev_info(sm->dev, "setting M1XCLK to %ld\n", init->m1xclk);
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sm501_set_clock(sm->dev, SM501_CLOCK_M1XCLK, init->m1xclk);
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}
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if (init->mclk) {
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dev_info(sm->dev, "setting MCLK to %ld\n", init->mclk);
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sm501_set_clock(sm->dev, SM501_CLOCK_MCLK, init->mclk);
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}
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}
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static unsigned int sm501_mem_local[] = {
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