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| author | Levin Du <djw@t-chip.com.cn> | 2018-07-31 08:59:22 +0300 |
|---|---|---|
| committer | Heiko Stuebner <heiko@sntech.de> | 2018-08-27 07:16:48 +0300 |
| commit | 99165b93dafe4f2a821b5dae106f2ef6b4ceff7e (patch) | |
| tree | 8408a86370515f95a18ebed7ddf7279cee4695dd /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | 692ff61efab62fde4ae43d611e9c0cdb060dacbd (diff) | |
| download | linux-99165b93dafe4f2a821b5dae106f2ef6b4ceff7e.tar.xz | |
arm64: dts: rockchip: add sdmmc UHS support for roc-rk3328-cc
In roc-rk3328-cc board, the signal voltage of sdmmc is supplied by the
vcc_sdio regulator, which is a mux between 1.8V and 3.3V, controlled by
a special output only gpio pin labeled "gpiomut_pmuio_iout",
corresponding bit 1 of the syscon GRF_SOC_CON10.
This special pin can now be reference as <&grf_gpio 0>, thanks to the
gpio-syscon driver, which makes writing regulator-gpio possible.
If the signal voltage changes, the io domain needs to change
correspondingly.
To use this feature, the following options are required in kernel config:
- CONFIG_GPIO_SYSCON=y
- CONFIG_POWER_AVS=y
- CONFIG_ROCKCHIP_IODOMAIN=y
Signed-off-by: Levin Du <djw@t-chip.com.cn>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions