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authorPrzemyslaw Marczak <p.marczak@samsung.com>2015-10-27 13:07:55 +0100
committerMinkyu Kang <mk7.kang@samsung.com>2015-11-02 10:37:59 +0900
commitfdbb740d7c3fd701ca3af1f6033060cfd358c2bc (patch)
tree7d233621a0502c9d85c2fc5b71ba69b01b09f6b0 /doc
parentbc3f39ea0d3c9339b7f09b1d766b6a62e1921033 (diff)
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>
Diffstat (limited to 'doc')
-rw-r--r--doc/device-tree-bindings/exynos/soc.txt21
1 files changed, 21 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/exynos/soc.txt b/doc/device-tree-bindings/exynos/soc.txt
new file mode 100644
index 00000000000..9ba6f3b9f80
--- /dev/null
+++ b/doc/device-tree-bindings/exynos/soc.txt
@@ -0,0 +1,21 @@
+Exynos SoC model
+
+The "cpu-model" property is a non-standard extension for the device tree root
+node. Since the cpu id of some Exynos variants does not correspond to product
+name, this property fills the gap.
+
+For almost all Exynos based boards in the kernel, the product name corresponds
+to the device tree file name. The same name is generated in U-Boot, so the new
+property allows doing it automatically.
+
+Required properties:
+ - cpu-model : Exynos product name
+
+Example:
+
+/ {
+ model = "Samsung/Google Peach Pi board based on Exynos5800";
+ cpu-model = "Exynos5800";
+
+ compatible = ...
+};