diff options
| author | Chen-Yu Tsai <wens@csie.org> | 2018-07-14 21:55:45 +0800 |
|---|---|---|
| committer | Jagan Teki <jagan@amarulasolutions.com> | 2018-07-17 21:07:34 +0530 |
| commit | 32f67bb7a15cec4afa117bd168265ece2107b0d6 (patch) | |
| tree | 95ce2bab940b0316c63310cb88fe258ac020a52c | |
| parent | a8b36f22b22f46ef3f660c4c16ba88a8efdfb2cb (diff) | |
sunxi: Enable eMMC on Libre Computer Board ALL-H3-CC boards
The Libretech ALL-H3-CC has a high density connector for attaching
an eMMC module. The module form factor and connection is specific
to Libretech, and has provisions for split vmmc/vqmmc (core and I/O)
voltage supplies, but this board does not wire the vqmmc side. The
H2+/H3/H5 SoCs do not support alternate I/O voltages for eMMC either.
Only 3.3V is supported. A specific module that ties vqmmc to vmmc,
with both at 3.3V, must be used.
Given that a) eMMC is not designed to be hotplugged, b) power is
always provided on the pins, and c) MMC controllers can deal with
missing cards, we can enable this by default. If a module is attached
it will be picked up by the system.
The device tree change was also submitted to the Linux Kernel and
has already been queued up for 4.19.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
| -rw-r--r-- | arch/arm/dts/sunxi-libretech-all-h3-cc.dtsi | 9 | ||||
| -rw-r--r-- | configs/libretech_all_h3_cc_h2_plus_defconfig | 1 | ||||
| -rw-r--r-- | configs/libretech_all_h3_cc_h3_defconfig | 1 | ||||
| -rw-r--r-- | configs/libretech_all_h3_cc_h5_defconfig | 1 |
4 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/dts/sunxi-libretech-all-h3-cc.dtsi b/arch/arm/dts/sunxi-libretech-all-h3-cc.dtsi index 111707cfa2..14c8ec16d4 100644 --- a/arch/arm/dts/sunxi-libretech-all-h3-cc.dtsi +++ b/arch/arm/dts/sunxi-libretech-all-h3-cc.dtsi @@ -138,6 +138,15 @@ status = "okay"; }; +&mmc2 { + pinctrl-names = "default"; + pinctrl-0 = <&mmc2_8bit_pins>; + vmmc-supply = <®_vcc_io>; + bus-width = <8>; + non-removable; + status = "okay"; +}; + &ohci1 { status = "okay"; }; diff --git a/configs/libretech_all_h3_cc_h2_plus_defconfig b/configs/libretech_all_h3_cc_h2_plus_defconfig index 0cbcd48aad..071be93697 100644 --- a/configs/libretech_all_h3_cc_h2_plus_defconfig +++ b/configs/libretech_all_h3_cc_h2_plus_defconfig @@ -5,6 +5,7 @@ CONFIG_MACH_SUN8I_H3=y CONFIG_DRAM_CLK=672 CONFIG_DRAM_ZQ=3881979 CONFIG_DRAM_ODT_EN=y +CONFIG_MMC_SUNXI_SLOT_EXTRA=2 CONFIG_DEFAULT_DEVICE_TREE="sun8i-h2-plus-libretech-all-h3-cc" # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set # CONFIG_CMD_FLASH is not set diff --git a/configs/libretech_all_h3_cc_h3_defconfig b/configs/libretech_all_h3_cc_h3_defconfig index 185facdf3e..c20ad9f3a2 100644 --- a/configs/libretech_all_h3_cc_h3_defconfig +++ b/configs/libretech_all_h3_cc_h3_defconfig @@ -5,6 +5,7 @@ CONFIG_MACH_SUN8I_H3=y CONFIG_DRAM_CLK=672 CONFIG_DRAM_ZQ=3881979 CONFIG_DRAM_ODT_EN=y +CONFIG_MMC_SUNXI_SLOT_EXTRA=2 CONFIG_DEFAULT_DEVICE_TREE="sun8i-h3-libretech-all-h3-cc" # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set # CONFIG_CMD_FLASH is not set diff --git a/configs/libretech_all_h3_cc_h5_defconfig b/configs/libretech_all_h3_cc_h5_defconfig index 061bddc8fd..5db8dfcd4f 100644 --- a/configs/libretech_all_h3_cc_h5_defconfig +++ b/configs/libretech_all_h3_cc_h5_defconfig @@ -5,6 +5,7 @@ CONFIG_MACH_SUN50I_H5=y CONFIG_DRAM_CLK=672 CONFIG_DRAM_ZQ=3881979 CONFIG_DRAM_ODT_EN=y +CONFIG_MMC_SUNXI_SLOT_EXTRA=2 CONFIG_DEFAULT_DEVICE_TREE="sun50i-h5-libretech-all-h3-cc" # CONFIG_SYS_MALLOC_CLEAR_ON_INIT is not set # CONFIG_CMD_FLASH is not set |