[PATCH v2 0/6] rockchip: rk3328: sync dts and add ROC-RK3328-CC board

[Kurt Miller <kurt@intricatesoftware.com>]

On Sun, 2020-04-05 at 10:25 +0800, Chen-Yu Tsai wrote:
> From: Chen-Yu Tsai <wens@csie.org>
> 
> Hi everyone,
> 
> This is v2 of my ROC-RK3328-CC series. Changes from v1 are mainly
> dropping the custom board target, and dealing with the pinmuxing
> through proper use of DM regulators / GPIO / pinctrl in SPL.
> 
> This series adds proper support for Firefly / Libre Computer ROC-RK3328-CC
> single board computer.
> 
> The ROC-RK3328-CC from Firefly and Libre Computer Project is a credit
> card size development board based on the Rockchip RK3328 SoC, with:
> 
> ? - 1/2/4 GB DDR4 DRAM
> ? - eMMC connector for optional module
> ? - micro SD card slot
> ? - 1 x USB 3.0 host port
> ? - 2 x USB 2.0 host port
> ? - 1 x USB 2.0 OTG port
> ? - HDMI video output
> ? - TRRS connector with audio and composite video output
> ? - gigabit Ethernet
> ? - consumer IR receiver
> ? - debug UART pins
> 
> Originally I started with Loic's patches, and syncing the device tree
> files from Linux. That didn't get very far, with SPL failing to detect
> the SD card. Examining the schematics and internal state of GRF and
> GPIOs, I realized that the logic for the SD card power enable switch
> is opposite that of what the SD card controller's SDMMC0_PWREN pin
> would use. Instead, directly using the GPIO is required.
> 
> To deal with this, DM regulator and GPIO are enabled in SPL, and
> various device nodes are marked with u-boot,dm-spl to have them work.
> pinctrl properties are not stripped, so as to have the SDMMC0_PWREN
> pin muxed over to GPIO.
> 
> Along the way, there are some clean-ups of existing dts files, moving
> U-boot only features to -u-boot.dtsi files, and then a wholesale sync
> from Linux. Only boards already existing in U-boot are synced. DT
> binding header files are synced separately as there is already one
> patch floating around. The DT sync also includes clean-up changes only
> recently posted, and likely won't make it in for at least a few weeks.
> 
> Please have a look, and test if possible. I cc-ed a couple people that
> showed interest in this board on mailing lists recently.
> 
> Regards
> ChenYu
> 
> 
> Chen-Yu Tsai (6):
> ? rockchip: dts: rk3328-evb: Move vcc5v0-host-xhci-drv to -u-boot.dtsi
> ? rockchip: dts: rk3328-evb: Move gmac2io related nodes to -u-boot.dtsi
> ? dt-bindings: clock: rk3328: sync from upstream Linux kernel
> ? dt-bindings: power: rk3328-power: sync from upstream Linux kernel
> ? rockchip: dts: rk3328: Sync device tree files from Linux
> ? rockchip: rk3328: Add support for ROC-RK3328-CC board
> 
> ?arch/arm/dts/Makefile?????????????????????????|????1 +
> ?arch/arm/dts/rk3328-evb-u-boot.dtsi???????????|???39 +
> ?arch/arm/dts/rk3328-evb.dts???????????????????|??220 +--
> ?arch/arm/dts/rk3328-roc-cc-u-boot.dtsi????????|???38 +
> ?.../{rk3328-rock64.dts => rk3328-roc-cc.dts}??|??135 +-
> ?arch/arm/dts/rk3328-rock64.dts????????????????|??132 +-
> ?arch/arm/dts/rk3328.dtsi??????????????????????| 1420 +++++++++++------
> ?board/rockchip/evb_rk3328/MAINTAINERS?????????|????7 +
> ?configs/roc-cc-rk3328_defconfig???????????????|??103 ++
> ?doc/README.rockchip???????????????????????????|????4 +-
> ?include/dt-bindings/clock/rk3328-cru.h????????|??212 +--
> ?include/dt-bindings/power/rk3328-power.h??????|???19 +
> ?12 files changed, 1578 insertions(+), 752 deletions(-)
> ?create mode 100644 arch/arm/dts/rk3328-roc-cc-u-boot.dtsi
> ?copy arch/arm/dts/{rk3328-rock64.dts => rk3328-roc-cc.dts} (68%)
> ?create mode 100644 configs/roc-cc-rk3328_defconfig
> ?create mode 100644 include/dt-bindings/power/rk3328-power.h
> 

Hi ChenYu,

I needed to apply the following additional diff to your patchset
to allow the Rock64 v3 board to boot through SPL. I copied the
same approach from your?ROC-RK3328-CC changes. While it works
it needs expert review.

diff --git a/arch/arm/dts/rk3328-rock64-u-boot.dtsi b/arch/arm/dts/rk3328-rock64-u-boot.dtsi
index e5946d2d2d..7d4ae66834 100644
--- a/arch/arm/dts/rk3328-rock64-u-boot.dtsi
+++ b/arch/arm/dts/rk3328-rock64-u-boot.dtsi
@@ -11,6 +11,27 @@
?	};
?};
?
+&gpio0 {
+???????u-boot,dm-spl;
+};
+
+&pinctrl {
+???????u-boot,dm-spl;
+};
+
+&sdmmc0m1_gpio {
+???????u-boot,dm-spl;
+};
+
+&pcfg_pull_up_4ma {
+???????u-boot,dm-spl;
+};
+
?&usb_host0_xhci {
?	status = "okay";
?};
+
+/* Need this and all the pinctrl/gpio stuff above to set pinmux */
+&vcc_sd {
+???????u-boot,dm-spl;
+};
diff --git a/configs/rock64-rk3328_defconfig b/configs/rock64-rk3328_defconfig
index 826c7a6917..5e4516635e 100644
--- a/configs/rock64-rk3328_defconfig
+++ b/configs/rock64-rk3328_defconfig
@@ -1,6 +1,7 @@
?CONFIG_ARM=y
?CONFIG_ARCH_ROCKCHIP=y
?CONFIG_SYS_TEXT_BASE=0x00200000
+CONFIG_SPL_GPIO_SUPPORT=y
?CONFIG_ENV_OFFSET=0x3F8000
?CONFIG_ROCKCHIP_RK3328=y
?CONFIG_TPL_ROCKCHIP_COMMON_BOARD=y
@@ -25,6 +26,8 @@ CONFIG_DISPLAY_BOARDINFO_LATE=y
?# CONFIG_SPL_RAW_IMAGE_SUPPORT is not set
?CONFIG_TPL_SYS_MALLOC_SIMPLE=y
?CONFIG_SPL_STACK_R=y
+CONFIG_SPL_I2C_SUPPORT=y
+CONFIG_SPL_POWER_SUPPORT=y
?CONFIG_SPL_ATF=y
?CONFIG_SPL_ATF_NO_PLATFORM_PARAM=y
?CONFIG_CMD_BOOTZ=y
@@ -36,7 +39,7 @@ CONFIG_CMD_TIME=y
?CONFIG_SPL_OF_CONTROL=y
?CONFIG_TPL_OF_CONTROL=y
?CONFIG_DEFAULT_DEVICE_TREE="rk3328-rock64"
-CONFIG_OF_SPL_REMOVE_PROPS="pinctrl-0 pinctrl-names clock-names interrupt-parent assigned-clocks assigned-clock-rates
assigned-clock-parents"
+CONFIG_OF_SPL_REMOVE_PROPS="clock-names interrupt-parent assigned-clocks assigned-clock-rates assigned-clock-parents"
?CONFIG_TPL_OF_PLATDATA=y
?CONFIG_ENV_IS_IN_MMC=y
?CONFIG_SYS_RELOC_GD_ENV_ADDR=y
@@ -65,7 +68,9 @@ CONFIG_PINCTRL=y
?CONFIG_SPL_PINCTRL=y
?CONFIG_DM_PMIC=y
?CONFIG_PMIC_RK8XX=y
+CONFIG_SPL_DM_REGULATOR=y
?CONFIG_REGULATOR_PWM=y
+CONFIG_SPL_DM_REGULATOR_FIXED=y
?CONFIG_DM_REGULATOR_FIXED=y
?CONFIG_REGULATOR_RK8XX=y
?CONFIG_PWM_ROCKCHIP=y