From 9ab4650f718a0e1cb8792bab4ef97efca4ac75c2 Mon Sep 17 00:00:00 2001 From: Dinh Nguyen Date: Mon, 15 Nov 2010 11:30:01 -0600 Subject: 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 Signed-off-by: Sascha Hauer --- arch/arm/mach-mx3/clock-imx31.c | 2 +- arch/arm/mach-mx3/cpu.c | 31 ++++++++++++++++++------------- 2 files changed, 19 insertions(+), 14 deletions(-) (limited to 'arch/arm/mach-mx3') diff --git a/arch/arm/mach-mx3/clock-imx31.c b/arch/arm/mach-mx3/clock-imx31.c index 109e98f323e0..7cf6d29f376b 100644 --- a/arch/arm/mach-mx3/clock-imx31.c +++ b/arch/arm/mach-mx3/clock-imx31.c @@ -615,7 +615,7 @@ int __init mx31_clocks_init(unsigned long fref) mx31_read_cpu_rev(); - if (mx31_revision() >= MX31_CHIP_REV_2_0) { + if (mx31_revision() >= IMX_CHIP_REVISION_2_0) { reg = __raw_readl(MXC_CCM_PMCR1); /* No PLL restart on DVFS switch; enable auto EMI handshake */ reg |= MXC_CCM_PMCR1_PLLRDIS | MXC_CCM_PMCR1_EMIRQ_EN; diff --git a/arch/arm/mach-mx3/cpu.c b/arch/arm/mach-mx3/cpu.c index d00a75457812..d1d339576fdf 100644 --- a/arch/arm/mach-mx3/cpu.c +++ b/arch/arm/mach-mx3/cpu.c @@ -25,15 +25,15 @@ struct mx3_cpu_type { }; static struct mx3_cpu_type mx31_cpu_type[] __initdata = { - { .srev = 0x00, .name = "i.MX31(L)", .v = "1.0", .rev = MX3x_CHIP_REV_1_0 }, - { .srev = 0x10, .name = "i.MX31", .v = "1.1", .rev = MX3x_CHIP_REV_1_1 }, - { .srev = 0x11, .name = "i.MX31L", .v = "1.1", .rev = MX3x_CHIP_REV_1_1 }, - { .srev = 0x12, .name = "i.MX31", .v = "1.15", .rev = MX3x_CHIP_REV_1_1 }, - { .srev = 0x13, .name = "i.MX31L", .v = "1.15", .rev = MX3x_CHIP_REV_1_1 }, - { .srev = 0x14, .name = "i.MX31", .v = "1.2", .rev = MX3x_CHIP_REV_1_2 }, - { .srev = 0x15, .name = "i.MX31L", .v = "1.2", .rev = MX3x_CHIP_REV_1_2 }, - { .srev = 0x28, .name = "i.MX31", .v = "2.0", .rev = MX3x_CHIP_REV_2_0 }, - { .srev = 0x29, .name = "i.MX31L", .v = "2.0", .rev = MX3x_CHIP_REV_2_0 }, + { .srev = 0x00, .name = "i.MX31(L)", .v = "1.0", .rev = IMX_CHIP_REVISION_1_0 }, + { .srev = 0x10, .name = "i.MX31", .v = "1.1", .rev = IMX_CHIP_REVISION_1_1 }, + { .srev = 0x11, .name = "i.MX31L", .v = "1.1", .rev = IMX_CHIP_REVISION_1_1 }, + { .srev = 0x12, .name = "i.MX31", .v = "1.15", .rev = IMX_CHIP_REVISION_1_1 }, + { .srev = 0x13, .name = "i.MX31L", .v = "1.15", .rev = IMX_CHIP_REVISION_1_1 }, + { .srev = 0x14, .name = "i.MX31", .v = "1.2", .rev = IMX_CHIP_REVISION_1_2 }, + { .srev = 0x15, .name = "i.MX31L", .v = "1.2", .rev = IMX_CHIP_REVISION_1_2 }, + { .srev = 0x28, .name = "i.MX31", .v = "2.0", .rev = IMX_CHIP_REVISION_2_0 }, + { .srev = 0x29, .name = "i.MX31L", .v = "2.0", .rev = IMX_CHIP_REVISION_2_0 }, }; void __init mx31_read_cpu_rev(void) @@ -53,6 +53,8 @@ void __init mx31_read_cpu_rev(void) return; } + mx31_cpu_rev = IMX_CHIP_REVISION_UNKNOWN; + printk(KERN_WARNING "Unknown CPU identifier. srev = %02x\n", srev); } @@ -62,22 +64,25 @@ EXPORT_SYMBOL(mx35_cpu_rev); void __init mx35_read_cpu_rev(void) { u32 rev; - char *srev = "unknown"; + char *srev; rev = __raw_readl(MX35_IO_ADDRESS(MX35_IIM_BASE_ADDR + MXC_IIMSREV)); switch (rev) { case 0x00: - mx35_cpu_rev = MX3x_CHIP_REV_1_0; + mx35_cpu_rev = IMX_CHIP_REVISION_1_0; srev = "1.0"; break; case 0x10: - mx35_cpu_rev = MX3x_CHIP_REV_2_0; + mx35_cpu_rev = IMX_CHIP_REVISION_2_0; srev = "2.0"; break; case 0x11: - mx35_cpu_rev = MX3x_CHIP_REV_2_1; + mx35_cpu_rev = IMX_CHIP_REVISION_2_1; srev = "2.1"; break; + default: + mx35_cpu_rev = IMX_CHIP_REVISION_UNKNOWN; + srev = "unknown"; } printk(KERN_INFO "CPU identified as i.MX35, silicon rev %s\n", srev); -- cgit v1.2.1