On Fri, 24 Dec 2021 at 06:44, Alper Nebi Yasak alpernebiyasak@gmail.com wrote:
From: Simon Glass sjg@chromium.org
This adds some devicetree settings for the Gru-based boards, based on what works on a Kevin board.
Gru-based boards usually have an 8MiB SPI flash chip and boot from it. Make the u-boot.rom file intended to be flashed on it match its size. Add properties for booting from SPI, and only try to boot from SPI as MMC and SD card don't seem to work in SPL yet.
The Chromium OS EC needs a delay between transactions so it can get itself ready. Also it currently uses a non-standard way of specifying the interrupt. Add these so that the EC works reliably.
The Rockchip Embedded DisplayPort driver is looking for a rockchip,panel property to find the panel it should work on. Add the property for the Gru-based boards.
The U-Boot GPIO controlled regulator driver only considers the "enable-gpios" devicetree property, not the singular "enable-gpio" one. Some devicetree source files have the singular form as they were added to Linux kernel when it used that form, and imported to U-Boot as is. Fix one instance of this in the Gru boards' devicetree to the form that works in U-Boot.
The PWM controlled regulator driver complains that there is no init voltage set for a regulator it drives, though it's not clear which one. Set them all to the voltage levels coreboot sets them: 900 mV.
The RK3399 SoC needs to know the voltage level that some supplies provides, including one fixed 1.8V audio-related regulator. Although this synchronization is currently statically done in the board init functions, a not-so-hypothetical driver that does this dynamically would query the regulator only to get -ENODATA and be confused. Make sure U-Boot knows this supply is at 1.8V by setting its limits to that.
Most of this is a reapplication of commit 08c85b57a5ec ("rockchip: gru: Add extra device-tree settings") whose changes were removed during a sync with Linux at commit 167efc2c7a46 ("arm64: dts: rk3399: Sync v5.7-rc1 from Linux"). Apply things to rk3399-gru-u-boot.dtsi instead so they don't get lost again.
Signed-off-by: Simon Glass sjg@chromium.org [Alper: move to -u-boot.dtsi, rewrite commit message, add more nodes] Co-developed-by: Alper Nebi Yasak alpernebiyasak@gmail.com Signed-off-by: Alper Nebi Yasak alpernebiyasak@gmail.com Reviewed-by: Kever Yang kever.yang@rock-chips.com
Kept sign-off and author as Simon based on the aforementioned commit.
Changes in v3:
- Add tag: "Reviewed-by: Kever Yang kever.yang@rock-chips.com"
arch/arm/dts/rk3399-gru-u-boot.dtsi | 55 +++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+)
Reviewed-by: Simon Glass sjg@chromium.org Tested on bob, kevin Tested-by: Simon Glass sjg@chromium.org