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| author | Samuel Holland <samuel@sholland.org> | 2020-10-24 10:21:52 -0500 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2020-11-16 12:34:08 +0530 |
| commit | 16ba7d87d533b97669c5d4a12106a80226763574 (patch) | |
| tree | 6bad606e5d6f606b1e89b976d695760a0bb9e8cc | |
| parent | fd795079da5b09b74d3f4f011a29f1c3c5afb04d (diff) | |
| download | u-boot-16ba7d87d533b97669c5d4a12106a80226763574.zip u-boot-16ba7d87d533b97669c5d4a12106a80226763574.tar.gz u-boot-16ba7d87d533b97669c5d4a12106a80226763574.tar.bz2 | |
sunxi: board: Add PinePhone DT selection logic
There are two different publicly-released revisions of the PinePhone
hardware, versions 1.1 and 1.2; and they need different device trees.
Since some GPIO pins were rerouted, we can use that to distinguish
between them.
Acked-by: Maxime Ripard <mripard@kernel.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
| -rw-r--r-- | arch/arm/mach-sunxi/Kconfig | 7 | ||||
| -rw-r--r-- | board/sunxi/board.c | 21 |
2 files changed, 28 insertions, 0 deletions
diff --git a/arch/arm/mach-sunxi/Kconfig b/arch/arm/mach-sunxi/Kconfig index be0822b..8421f3b 100644 --- a/arch/arm/mach-sunxi/Kconfig +++ b/arch/arm/mach-sunxi/Kconfig @@ -1010,4 +1010,11 @@ config PINE64_DT_SELECTION option, the device tree selection code specific to Pine64 which utilizes the DRAM size will be enabled. +config PINEPHONE_DT_SELECTION + bool "Enable PinePhone device tree selection code" + depends on MACH_SUN50I + help + Enable this option to automatically select the device tree for the + correct PinePhone hardware revision during boot. + endif diff --git a/board/sunxi/board.c b/board/sunxi/board.c index ec1920c..bff5135 100644 --- a/board/sunxi/board.c +++ b/board/sunxi/board.c @@ -27,6 +27,7 @@ #include <asm/arch/dram.h> #include <asm/arch/gpio.h> #include <asm/arch/mmc.h> +#include <asm/arch/prcm.h> #include <asm/arch/spl.h> #include <linux/delay.h> #include <u-boot/crc.h> @@ -920,6 +921,26 @@ int board_fit_config_name_match(const char *name) best_dt_name = "sun50i-a64-pine64"; } #endif +#ifdef CONFIG_PINEPHONE_DT_SELECTION + if (strstr(best_dt_name, "-pinephone")) { + /* Differentiate the PinePhone revisions by GPIO inputs. */ + prcm_apb0_enable(PRCM_APB0_GATE_PIO); + sunxi_gpio_set_pull(SUNXI_GPL(6), SUNXI_GPIO_PULL_UP); + sunxi_gpio_set_cfgpin(SUNXI_GPL(6), SUNXI_GPIO_INPUT); + udelay(100); + + /* PL6 is pulled low by the modem on v1.2. */ + if (gpio_get_value(SUNXI_GPL(6)) == 0) + best_dt_name = "sun50i-a64-pinephone-1.2"; + else + best_dt_name = "sun50i-a64-pinephone-1.1"; + + sunxi_gpio_set_cfgpin(SUNXI_GPL(6), SUNXI_GPIO_DISABLE); + sunxi_gpio_set_pull(SUNXI_GPL(6), SUNXI_GPIO_PULL_DISABLE); + prcm_apb0_disable(PRCM_APB0_GATE_PIO); + } +#endif + return strcmp(name, best_dt_name); } #endif |