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board: amlogic: odroid: add runtime detection of the N2/N2+/C4/HC4 variants

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Use the ADC channel 1 to check the hardware revision of the board and
detect the N2 vs. N2+ and the C4 vs. HC4 variants. Each of them use
different dtb file, so adjust fdtfile environment variable to the
detected variant.

The ADC min/max values for each variant are taken from the vendor code,
adjusted to the 12-bit ADC driver operation mode (vendor code use 10-bit
mode).

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
This commit is contained in:
Marek Szyprowski
2021-02-04 10:11:45 +01:00
committed by Neil Armstrong
parent 4547551aa0
commit 8bc780106c
5 changed files with 98 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
configs/odroid-c4_defconfig
View File

@@ -8,7 +8,7 @@ CONFIG_DM_GPIO=y
CONFIG_MESON_G12A=y
CONFIG_DEBUG_UART_BASE=0xff803000
CONFIG_DEBUG_UART_CLOCK=24000000
CONFIG_IDENT_STRING=" odroid-c4"
CONFIG_IDENT_STRING=" odroid-c4/hc4"
CONFIG_DEFAULT_DEVICE_TREE="meson-sm1-odroid-c4"
CONFIG_DEBUG_UART=y
CONFIG_OF_BOARD_SETUP=y
@@ -26,6 +26,8 @@ CONFIG_CMD_REGULATOR=y
CONFIG_OF_CONTROL=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_NET_RANDOM_ETHADDR=y
CONFIG_ADC=y
CONFIG_SARADC_MESON=y
CONFIG_DM_MMC=y
CONFIG_MMC_MESON_GX=y
CONFIG_PHY_REALTEK=y

4
configs/odroid-n2_defconfig
View File

@@ -8,7 +8,7 @@ CONFIG_DM_GPIO=y
CONFIG_MESON_G12A=y
CONFIG_DEBUG_UART_BASE=0xff803000
CONFIG_DEBUG_UART_CLOCK=24000000
CONFIG_IDENT_STRING=" odroid-n2"
CONFIG_IDENT_STRING=" odroid-n2/n2_plus"
CONFIG_DEFAULT_DEVICE_TREE="meson-g12b-odroid-n2"
CONFIG_DEBUG_UART=y
CONFIG_OF_BOARD_SETUP=y
@@ -26,6 +26,8 @@ CONFIG_CMD_REGULATOR=y
CONFIG_OF_CONTROL=y
CONFIG_SYS_RELOC_GD_ENV_ADDR=y
CONFIG_NET_RANDOM_ETHADDR=y
CONFIG_ADC=y
CONFIG_SARADC_MESON=y
CONFIG_DM_MMC=y
CONFIG_MMC_MESON_GX=y
CONFIG_PHY_REALTEK=y