[[PATCH v3 1/6] ARM: imx: Introduce generic function for displaying silicon revision
From: Jason Liu <hidden>
Date: 2011-08-26 05:35:18
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Fabio Estevam <redacted> Currently each i.MX processor has its own function for displaying the silicon revision. Introduce a generic function for this purpose, so that all i.MX processors can reuse it. Signed-off-by: Fabio Estevam <redacted> Signed-off-by: Jason Liu <redacted> Cc: Sascha Hauer <s.hauer@pengutronix.de> --- V2: remove EXPORT_SYMBOL --- arch/arm/plat-mxc/cpu.c | 9 +++++++++ arch/arm/plat-mxc/include/mach/common.h | 1 + 2 files changed, 10 insertions(+), 0 deletions(-)
diff --git a/arch/arm/plat-mxc/cpu.c b/arch/arm/plat-mxc/cpu.c
index 386e0d5..f5b7e0f 100644
--- a/arch/arm/plat-mxc/cpu.c
+++ b/arch/arm/plat-mxc/cpu.c@@ -1,5 +1,6 @@ #include <linux/module.h> +#include <mach/hardware.h> unsigned int __mxc_cpu_type; EXPORT_SYMBOL(__mxc_cpu_type);
@@ -9,3 +10,11 @@ void mxc_set_cpu_type(unsigned int type) __mxc_cpu_type = type; } +void imx_print_silicon_rev(const char *cpu, int srev) +{ + if (srev == IMX_CHIP_REVISION_UNKNOWN) + pr_info("CPU identified as %s, unknown revision\n", cpu); + else + pr_info("CPU identified as %s, silicon rev %d.%d\n", + cpu, (srev >> 4) & 0xf, srev & 0xf); +}
diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h
index 4e3d978..318e0da 100644
--- a/arch/arm/plat-mxc/include/mach/common.h
+++ b/arch/arm/plat-mxc/include/mach/common.h@@ -72,4 +72,5 @@ extern void mxc_arch_reset_init(void __iomem *); extern void mx51_efikamx_reset(void); extern int mx53_revision(void); extern int mx53_display_revision(void); +extern void imx_print_silicon_rev(const char *cpu, int srev); #endif
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1.7.4.1