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i.MX35 clock support: remove automotive path

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It is no longer present in newer cores. Unfortunately Freescale decided
to put the bit which decides between automotive clock path and consumer
clock path in the automotive clock path direction. With current code we
cannot detect the core revision, so just remove automotive path completely.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-03-23 10:07:48 +01:00
parent 54df526819
commit d16caf69ce
1 changed files with 5 additions and 28 deletions
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33
arch/arm/mach-mx3/clock-imx35.c
View file

@ -147,34 +147,16 @@ static struct arm_ahb_div clk_consumer[] = {
{ .arm = 0, .ahb = 0, .sel = 0},
};
static struct arm_ahb_div clk_automotive[] = {
{ .arm = 1, .ahb = 3, .sel = 0},
{ .arm = 1, .ahb = 2, .sel = 1},
{ .arm = 2, .ahb = 1, .sel = 1},
{ .arm = 0, .ahb = 0, .sel = 0},
{ .arm = 1, .ahb = 6, .sel = 0},
{ .arm = 1, .ahb = 4, .sel = 1},
{ .arm = 2, .ahb = 2, .sel = 1},
{ .arm = 0, .ahb = 0, .sel = 0},
};
static unsigned long get_rate_arm(void)
{
unsigned long pdr0 = __raw_readl(CCM_BASE + CCM_PDR0);
struct arm_ahb_div *aad;
unsigned long fref = get_rate_mpll();
if (pdr0 & 1) {
/* consumer path */
aad = &clk_consumer[(pdr0 >> 16) & 0xf];
if (aad->sel)
fref = fref * 2 / 3;
} else {
/* auto path */
aad = &clk_automotive[(pdr0 >> 9) & 0x7];
if (aad->sel)
fref = fref * 3 / 4;
}
aad = &clk_consumer[(pdr0 >> 16) & 0xf];
if (aad->sel)
fref = fref * 2 / 3;
return fref / aad->arm;
}
@ -184,12 +166,7 @@ static unsigned long get_rate_ahb(struct clk *clk)
struct arm_ahb_div *aad;
unsigned long fref = get_rate_mpll();
if (pdr0 & 1)
/* consumer path */
aad = &clk_consumer[(pdr0 >> 16) & 0xf];
else
/* auto path */
aad = &clk_automotive[(pdr0 >> 9) & 0x7];
aad = &clk_consumer[(pdr0 >> 16) & 0xf];
return fref / aad->ahb;
}