diff options
| author | Dinh Nguyen <Dinh.Nguyen@freescale.com> | 2010-11-15 20:30:01 +0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-11-28 21:51:47 +0300 |
| commit | 9ab4650f718a0e1cb8792bab4ef97efca4ac75c2 (patch) | |
| tree | b04138d06accafc9861098238260f815d35edb8a /arch/arm/mach-imx/cpu-imx27.c | |
| parent | b66ff7a2cd411a2245c984793a7eb98ee91771f9 (diff) | |
| download | linux-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/cpu-imx27.c')
| -rw-r--r-- | arch/arm/mach-imx/cpu-imx27.c | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/cpu-imx27.c b/arch/arm/mach-imx/cpu-imx27.c index d8d3b2d84dc5..3b117be37bd2 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); } |