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authorPrzemyslaw Marczak <p.marczak@samsung.com>2015-10-27 13:08:05 +0100
committerMinkyu Kang <mk7.kang@samsung.com>2015-11-02 10:38:00 +0900
commit1611c8cbcfe2ee50cc5e96f3a5c666c99d235107 (patch)
tree45667f9633d85126d7ff3585bdd17d59844cc660 /include/samsung
parent9090d1dd0e379d598b72c7176cf55f3343421dae (diff)
exynos5-dt-types: add board detection for Odroid XU3/XU3L/XU4.
This commit adds additional file with implementation of board detection code for Odroid-XU3/XU4. The detection depends on compatible found in fdt: - "samsung,exynos5" - uses Exynos5 generic code - "samsung,odroidxu3" - try detect XU3 revision There are few revisions of Odroid XU3/XU4, each can be detected by checking the value of channel 9 of built-in ADC: Rev ADC Board 0.1 0 XU3 0.1 0.2 372 XU3 0.2 | XU3L - no DISPLAYPORT 0.3 1280 XU4 0.1 The detection code depends on the ADC+10% value. Implementation of functions: - set_board_type() - read ADC and set type - get_board_rev() - returns board revision: 1..3 - get_board_type() - returns board type string Additional functions with return values of bool: - board_is_generic() - true if found compatible "samsung,exynos5" but not "samsung,odroidxu3" - board_is_odroidxu3() - true if found compatible "samsung,odroidxu3" and one of XU3 revision. - board_is_odroidxu4() - true if found compatible "samsung,odroidxu3" and XU4 revision. After I2C controller init, the get_board_type() can check if the XU3 board is a "Lite" variant, by probing chip 0x40 on I2C0 (INA231 - exists only on non-lite). This is useful for setting fdt file name at misc_init_r(). Enabled configs: - CONFIG_ENV_VARS_UBOOT_RUNTIME_CONFIG - CONFIG_ODROID_REV_AIN - CONFIG_REVISION_TAG - CONFIG_BOARD_TYPES Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: 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 'include/samsung')
-rw-r--r--include/samsung/exynos5-dt-types.h27
1 files changed, 27 insertions, 0 deletions
diff --git a/include/samsung/exynos5-dt-types.h b/include/samsung/exynos5-dt-types.h
new file mode 100644
index 00000000000..479e2e793dc
--- /dev/null
+++ b/include/samsung/exynos5-dt-types.h
@@ -0,0 +1,27 @@
+#ifndef _EXYNOS5_DT_H_
+#define _EXYNOS5_DT_H_
+
+enum {
+ EXYNOS5_BOARD_GENERIC,
+
+ EXYNOS5_BOARD_ODROID_XU3,
+ EXYNOS5_BOARD_ODROID_XU3_REV01,
+ EXYNOS5_BOARD_ODROID_XU3_REV02,
+ EXYNOS5_BOARD_ODROID_XU4_REV01,
+ EXYNOS5_BOARD_ODROID_UNKNOWN,
+
+ EXYNOS5_BOARD_COUNT,
+};
+
+struct odroid_rev_info {
+ int board_type;
+ int board_rev;
+ int adc_val;
+ const char *name;
+};
+
+bool board_is_generic(void);
+bool board_is_odroidxu3(void);
+bool board_is_odroidxu4(void);
+
+#endif