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Chen-Yu Tsai bab972948e rockchip: rk3328: Add support for ROC-RK3328-CC board 
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

The ROC-RK3328-CC has the enable pin of the SD card power switch tied
to GPIO_0_D6. This pin also has the function SDMMC0_PWREN, which is
muxed by default. SDMMC0_PWREN is an active high signal controlled by
the MMC controller, however the switch enable is active low, and
pulled low (enabled) by default to make things work on boot.

As such, we need to mux away from SDMMC0_PWREN and use GPIO to enable
power to the card. The default GPIO state for the pin is pull-down and
input, which doesn't require extra configuration when paired with the
external pull-down and active low switch.

Deal with this by enabling regulator support in SPL, and setting
"u-boot,dm-spl" for the regulator and other device nodes needed for
muxing the pin.

The device tree file is synced from the Linux kernel next-20200324.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
2020-05-01 18:32:56 +08:00
..
cpu phy: add support for backplane kr mode 2020-04-20 13:35:11 +05:30
dts rockchip: rk3328: Add support for ROC-RK3328-CC board 2020-05-01 18:32:56 +08:00
include clk: actions: Add common clock driver 2020-04-24 16:40:09 -04:00
lib common/board_f: Make reserve_mmu generic 2020-04-24 15:17:14 -04:00
mach-aspeed dm: core: Require users of devres to include the header 2020-02-05 19:33:46 -07:00
mach-at91
mach-bcm283x
mach-bcmstb
mach-cortina board: presidio-asic: Add basic G3 engr. development board support 2020-02-07 16:16:01 -05:00
mach-davinci mach-davinci: Hard-code the default SPL_LDSCRIPT path 2020-03-16 18:54:18 -04:00
mach-exynos
mach-highbank
mach-imx spl: mmc: Rename spl_boot_mode() to spl_mmc_boot_mode() 2020-04-22 20:41:57 +08:00
mach-integrator
mach-k3 spl: mmc: Rename spl_boot_mode() to spl_mmc_boot_mode() 2020-04-22 20:41:57 +08:00
mach-keystone
mach-kirkwood
mach-mediatek arm: mediatek: remove unused binman config 2020-03-10 17:08:13 -04:00
mach-meson arm: meson-gx: add board_usb_init()/cleanup() for USB gadget 2020-04-20 14:19:10 +02:00
mach-mvebu arm: mvebu: correct SPL boot configs for SPI/MMC 2020-04-22 14:28:15 +02:00
mach-omap2 spl: mmc: Rename spl_boot_mode() to spl_mmc_boot_mode() 2020-04-22 20:41:57 +08:00
mach-orion5x edminiv2: Move CONFIG_SPL_LDSCRIPT to defconfig 2020-03-16 18:54:18 -04:00
mach-owl arm: add support Actions Semi S700 2020-04-24 16:40:09 -04:00
mach-qemu qemu: don't allow to select 32- and 64-bit 2020-04-24 10:51:32 -04:00
mach-rmobile
mach-rockchip spl: mmc: Rename spl_boot_mode() to spl_mmc_boot_mode() 2020-04-22 20:41:57 +08:00
mach-s5pc1xx
mach-snapdragon mach-snapdragon: Fix overwriting last digit of serial number 2020-04-03 11:47:47 -04:00
mach-socfpga spl: mmc: Rename spl_boot_mode() to spl_mmc_boot_mode() 2020-04-22 20:41:57 +08:00
mach-sti
mach-stm32
mach-stm32mp spl: mmc: Rename spl_boot_partition() to spl_mmc_boot_partition() 2020-04-22 20:41:57 +08:00
mach-sunxi sunxi: SPL SPI: Add SPI boot support for the Allwinner H6 SoC 2020-03-18 18:12:04 +05:30
mach-tegra ARM: tegra: Add NVIDIA Jetson Nano Developer Kit support 2020-04-02 14:30:02 -07:00
mach-u8500
mach-uniphier spl: mmc: Rename spl_boot_mode() to spl_mmc_boot_mode() 2020-04-22 20:41:57 +08:00
mach-versal arm: asm/cache.c: Introduce arm_reserve_mmu 2020-04-24 15:17:14 -04:00
mach-versatile
mach-zynq ARM: zynq: Do not print message about boot device 2020-04-06 12:52:45 +02:00
mach-zynqmp arm: asm/cache.c: Introduce arm_reserve_mmu 2020-04-24 15:17:14 -04:00
mach-zynqmp-r5
thumb1/include/asm/proc-armv
config.mk
Kconfig actions: Move defconfig options to Kconfig 2020-04-24 16:40:09 -04:00
Kconfig.debug
Makefile