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authorDinh Nguyen <Dinh.Nguyen@freescale.com>2010-11-15 17:30:01 (GMT)
committerSascha Hauer <s.hauer@pengutronix.de>2010-11-28 18:51:47 (GMT)
commit9ab4650f718a0e1cb8792bab4ef97efca4ac75c2 (patch)
treeb04138d06accafc9861098238260f815d35edb8a /arch/arm/mach-imx
parentb66ff7a2cd411a2245c984793a7eb98ee91771f9 (diff)
downloadlinux-9ab4650f718a0e1cb8792bab4ef97efca4ac75c2.tar.xz
ARM: imx: Get the silicon version from the IIM module
Instead of reading the silicon version from ROM, we should read the SREV register from the IIM. Freescale has dropped all support for MX51 REV1.0, only MX51 REV 2.0 and 3.0 are valid. Signed-off-by: Dinh Nguyen <Dinh.Nguyen@freescale.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r--arch/arm/mach-imx/clock-imx27.c22
-rw-r--r--arch/arm/mach-imx/cpu-imx27.c14
2 files changed, 24 insertions, 12 deletions
diff --git a/arch/arm/mach-imx/clock-imx27.c b/arch/arm/mach-imx/clock-imx27.c
index 98a25ba..2202b88 100644
--- a/arch/arm/mach-imx/clock-imx27.c
+++ b/arch/arm/mach-imx/clock-imx27.c
@@ -125,7 +125,7 @@ static int clk_cpu_set_parent(struct clk *clk, struct clk *parent)
if (clk->parent == parent)
return 0;
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
if (parent == &mpll_main1_clk) {
cscr |= CCM_CSCR_ARM_SRC;
} else {
@@ -174,7 +174,7 @@ static int set_rate_cpu(struct clk *clk, unsigned long rate)
div--;
reg = __raw_readl(CCM_CSCR);
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
reg &= ~(3 << 12);
reg |= div << 12;
reg &= ~(CCM_CSCR_FPM | CCM_CSCR_SPEN);
@@ -244,7 +244,7 @@ static unsigned long get_rate_ssix(struct clk *clk, unsigned long pdf)
parent_rate = clk_get_rate(clk->parent);
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
pdf += 4; /* MX27 TO2+ */
else
pdf = (pdf < 2) ? 124UL : pdf; /* MX21 & MX27 TO1 */
@@ -269,7 +269,7 @@ static unsigned long get_rate_nfc(struct clk *clk)
parent_rate = clk_get_rate(clk->parent);
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
nfc_pdf = (__raw_readl(CCM_PCDR0) >> 6) & 0xf;
else
nfc_pdf = (__raw_readl(CCM_PCDR0) >> 12) & 0xf;
@@ -284,7 +284,7 @@ static unsigned long get_rate_vpu(struct clk *clk)
parent_rate = clk_get_rate(clk->parent);
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
vpu_pdf = (__raw_readl(CCM_PCDR0) >> 10) & 0x3f;
vpu_pdf += 4;
} else {
@@ -347,7 +347,7 @@ static unsigned long get_rate_mpll_main(struct clk *clk)
* clk->id == 0: arm clock source path 1 which is from 2 * MPLL / 2
* clk->id == 1: arm clock source path 2 which is from 2 * MPLL / 3
*/
- if (mx27_revision() >= CHIP_REV_2_0 && clk->id == 1)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0 && clk->id == 1)
return 2UL * parent_rate / 3UL;
return parent_rate;
@@ -365,7 +365,7 @@ static unsigned long get_rate_spll(struct clk *clk)
/* On TO2 we have to write the value back. Otherwise we
* read 0 from this register the next time.
*/
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
__raw_writel(reg, CCM_SPCTL0);
return mxc_decode_pll(reg, rate);
@@ -376,7 +376,7 @@ static unsigned long get_rate_cpu(struct clk *clk)
u32 div;
unsigned long rate;
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
div = (__raw_readl(CCM_CSCR) >> 12) & 0x3;
else
div = (__raw_readl(CCM_CSCR) >> 13) & 0x7;
@@ -389,7 +389,7 @@ static unsigned long get_rate_ahb(struct clk *clk)
{
unsigned long rate, bclk_pdf;
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
bclk_pdf = (__raw_readl(CCM_CSCR) >> 8) & 0x3;
else
bclk_pdf = (__raw_readl(CCM_CSCR) >> 9) & 0xf;
@@ -402,7 +402,7 @@ static unsigned long get_rate_ipg(struct clk *clk)
{
unsigned long rate, ipg_pdf;
- if (mx27_revision() >= CHIP_REV_2_0)
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0)
return clk_get_rate(clk->parent);
else
ipg_pdf = (__raw_readl(CCM_CSCR) >> 8) & 1;
@@ -683,7 +683,7 @@ static void __init to2_adjust_clocks(void)
{
unsigned long cscr = __raw_readl(CCM_CSCR);
- if (mx27_revision() >= CHIP_REV_2_0) {
+ if (mx27_revision() >= IMX_CHIP_REVISION_2_0) {
if (cscr & CCM_CSCR_ARM_SRC)
cpu_clk.parent = &mpll_main1_clk;
diff --git a/arch/arm/mach-imx/cpu-imx27.c b/arch/arm/mach-imx/cpu-imx27.c
index d8d3b2d..3b117be 100644
--- a/arch/arm/mach-imx/cpu-imx27.c
+++ b/arch/arm/mach-imx/cpu-imx27.c
@@ -42,7 +42,19 @@ static void query_silicon_parameter(void)
val = __raw_readl(MX27_IO_ADDRESS(MX27_SYSCTRL_BASE_ADDR
+ SYS_CHIP_ID));
- cpu_silicon_rev = (int)(val >> 28);
+ switch (val >> 28) {
+ case 0:
+ cpu_silicon_rev = IMX_CHIP_REVISION_1_0;
+ break;
+ case 1:
+ cpu_silicon_rev = IMX_CHIP_REVISION_2_0;
+ break;
+ case 2:
+ cpu_silicon_rev = IMX_CHIP_REVISION_2_1;
+ break;
+ default:
+ cpu_silicon_rev = IMX_CHIP_REVISION_UNKNOWN;
+ }
cpu_partnumber = (int)((val >> 12) & 0xFFFF);
}