From 1611c8cbcfe2ee50cc5e96f3a5c666c99d235107 Mon Sep 17 00:00:00 2001 From: Przemyslaw Marczak Date: Tue, 27 Oct 2015 13:08:05 +0100 Subject: 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 Cc: Minkyu Kang Cc: Simon Glass Tested-by: Anand Moon Signed-off-by: Minkyu Kang --- include/samsung/exynos5-dt-types.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 include/samsung/exynos5-dt-types.h (limited to 'include/samsung') diff --git a/include/samsung/exynos5-dt-types.h b/include/samsung/exynos5-dt-types.h new file mode 100644 index 0000000..479e2e7 --- /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 -- cgit v1.1