s5p: cpu_info: print "cpu-model" if exists in dts

The CPU name for Exynos was concatenated with cpu id,
but for new Exynos platforms, like Chromebook Peach Pi
based on Exynos5800, the name of SoC variant does not
include the real SoC cpu id (0x5422).

For such case, the CPU name should be defined in device tree.

This commit introduces new device-tree property for Exynos:
- "cpu-model" - with cpu name string
If defined, then the cpu id is not printed.

Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com>
Cc: Minkyu Kang <mk7.kang@samsung.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Anand Moon <linux.amoon@gmail.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>

1 files changed, 13 insertions, 1 deletions

diff --git a/arch/arm/cpu/armv7/s5p-common/cpu_info.c b/arch/arm/cpu/armv7/s5p-common/cpu_info.c
index 154d674..764c661 100644
--- a/arch/arm/cpu/armv7/s5p-common/cpu_info.c
+++ b/arch/arm/cpu/armv7/s5p-common/cpu_info.c
@@ -5,9 +5,12 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 #include <common.h>
+#include <fdtdec.h>
 #include <asm/io.h>
 #include <asm/arch/clk.h>
 
+DECLARE_GLOBAL_DATA_PTR;
+
 /* Default is s5pc100 */
 unsigned int s5p_cpu_id = 0xC100;
 /* Default is EVT1 */
@@ -30,7 +33,16 @@ u32 get_device_type(void)
 #ifdef CONFIG_DISPLAY_CPUINFO
 int print_cpuinfo(void)
 {
-	printf("CPU:   %s%X @ ", s5p_get_cpu_name(), s5p_cpu_id);
+	const char *cpu_model;
+	int len;
+
+	/* For SoC with no real CPU ID in naming convention. */
+	cpu_model = fdt_getprop(gd->fdt_blob, 0, "cpu-model", &len);
+	if (cpu_model)
+		printf("CPU:   %.*s @ ", len, cpu_model);
+	else
+		printf("CPU:   %s%X @ ", s5p_get_cpu_name(), s5p_cpu_id);
+
 	print_freq(get_arm_clk(), "\n");
 
 	return 0;