[lkml]   [2018]   [May]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Subject[PATCH v2 0/5] Add sdmmc UHS support to ROC-RK3328-CC board.
From: Levin Du <>

Hi all, this is an attemp to add sdmmc UHS support to the
ROC-RK3328-CC board.

This patch series adds a new compatible `rockchip,gpio-syscon` to
the gpio-syscon driver for general Rockchip SoC usage.

A new gpio controller named `gpio_mute` is defined in
rk3328.dtsi so that all rk3328 boards has access to it.

The ROC-RK3328-CC board use the new gpio <&gpio_mute 1> in
gpio-regulator to control the signal voltage of the sdmmc.
It is essential for UHS support which requires 1.8V signal voltage.

Many thanks to Heiko's great advice!

Changes in v2:
- Rename gpio_syscon10 to gpio_mute in doc
- Rename gpio_syscon10 to gpio_mute in rk3328.dtsi
- Rename gpio_syscon10 to gpio_mute in rk3328-roc-cc.dts

Changes in v1:
- New: allow fetching syscon from parent node in gpio-syscon driver
- Refactured for general gpio-syscon usage for Rockchip SoCs.
- Add doc rockchip,gpio-syscon.txt
- Split from V0 into small patches
- Sort dts properties in sdmmc node

Heiko Stuebner (1):
gpio: syscon: allow fetching syscon from parent node

Levin Du (4):
gpio: syscon: Add gpio-syscon for rockchip
arm64: dts: rockchip: Add gpio-mute to rk3328
arm64: dts: rockchip: Add io-domain to roc-rk3328-cc
arm64: dts: rockchip: Add sdmmc UHS support for roc-rk3328-cc

.../bindings/gpio/rockchip,gpio-syscon.txt | 41 ++++++++++++++++++++++
arch/arm64/boot/dts/rockchip/rk3328-roc-cc.dts | 30 ++++++++++++++++
arch/arm64/boot/dts/rockchip/rk3328.dtsi | 7 ++++
drivers/gpio/gpio-syscon.c | 32 +++++++++++++++++
4 files changed, 110 insertions(+)
create mode 100644 Documentation/devicetree/bindings/gpio/rockchip,gpio-syscon.txt


 \ /
  Last update: 2018-05-18 05:33    [W:0.112 / U:5.396 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site