Commit 1bfbcfd1 authored Mar 20, 2016 by Hans de Goede Committed by Maxime Ripard Mar 27, 2016

ARM: dts: sun8i: Add eMMC dt node on Orangepi Plus boards



The Orangepi Plus has a 16GB eMMC, the vcc, the lack of pull-ups and
the use of the hw-reset pin have all been verified with the board
schematic.

With this dts node for mmc2, the eMMC runs at the following ios settings:
clock:          52000000 Hz
vdd:            21 (3.3 ~ 3.4 V)
bus mode:       2 (push-pull)
chip select:    0 (don't care)
power mode:     2 (on)
bus width:      3 (8 bits)
timing spec:    8 (mmc DDR52)
signal voltage: 0 (3.30 V)
driver type:    0 (driver type B)

Note the mmcblk1boot0/boot1 partitions are unused as the BROM will load
the SPL from 8k from the start of the main blockdev, just as with a
regular sdcard in mmc0.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>

parent 4bf89c1d

arch/arm/boot/dts/sun8i-h3-orangepi-plus.dts

+17 −0

Original line number	Diff line number	Diff line
		@@ -186,6 +186,23 @@
		status = "okay";
		};

		&mmc2 {
		pinctrl-names = "default";
		pinctrl-0 = <&mmc2_8bit_pins>;
		vmmc-supply = <&reg_vcc3v3>;
		bus-width = <8>;
		non-removable;
		cap-mmc-hw-reset;
		status = "okay";
		};

		&mmc2_8bit_pins {
		/* Increase drive strength for DDR modes */
		allwinner,drive = <SUN4I_PINCTRL_40_MA>;
		/* eMMC is missing pull-ups */
		allwinner,pull = <SUN4I_PINCTRL_PULL_UP>;
		};

		&reg_usb1_vbus {
		gpio = <&pio 6 13 GPIO_ACTIVE_HIGH>;
		status = "okay";