A64 OLinuXino board from Olimex has three variants with onboard eMMC: A64-OLinuXino-1Ge16GW, A64-OLinuXino-1Ge4GW and A64-OLinuXino-2Ge8G-IND. In addition, there are two variants without eMMC. One without eMMC and one with SPI flash. This suggests the need for separate device tree for the three eMMC variants.
The Linux kernel upstream has chosen to create and use a separate device tree for the eMMC variants instead of adding eMMC support existing device tree. These changes to Linux kernel are queued for Linux 5.4.
https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux.git/commit/?h=su...
This patch has been tested on A64-OLinuXino-1Ge16GW and is based on Linux device-tree.
Signed-off-by: Sunil Mohan Adapa sunil@medhas.org --- arch/arm/dts/Makefile | 1 + arch/arm/dts/sun50i-a64-olinuxino-emmc.dts | 23 ++++++++++++++++++++++ 2 files changed, 24 insertions(+) create mode 100644 arch/arm/dts/sun50i-a64-olinuxino-emmc.dts
diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile index 05ff624c07..d28906a63b 100644 --- a/arch/arm/dts/Makefile +++ b/arch/arm/dts/Makefile @@ -530,6 +530,7 @@ dtb-$(CONFIG_MACH_SUN50I) += \ sun50i-a64-nanopi-a64.dtb \ sun50i-a64-oceanic-5205-5inmfd.dtb \ sun50i-a64-olinuxino.dtb \ + sun50i-a64-olinuxino-emmc.dtb \ sun50i-a64-orangepi-win.dtb \ sun50i-a64-pine64-lts.dtb \ sun50i-a64-pine64-plus.dtb \ diff --git a/arch/arm/dts/sun50i-a64-olinuxino-emmc.dts b/arch/arm/dts/sun50i-a64-olinuxino-emmc.dts new file mode 100644 index 0000000000..96ab0227e8 --- /dev/null +++ b/arch/arm/dts/sun50i-a64-olinuxino-emmc.dts @@ -0,0 +1,23 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (C) 2018 Martin Ayotte martinayotte@gmail.com + * Copyright (C) 2019 Sunil Mohan Adapa sunil@medhas.org + */ + +#include "sun50i-a64-olinuxino.dts" + +/ { + model = "Olimex A64-Olinuxino-eMMC"; + compatible = "olimex,a64-olinuxino-emmc", "allwinner,sun50i-a64"; +}; + +&mmc2 { + pinctrl-names = "default"; + pinctrl-0 = <&mmc2_pins>; + vmmc-supply = <®_dcdc1>; + vqmmc-supply = <®_dcdc1>; + bus-width = <8>; + non-removable; + cap-mmc-hw-reset; + status = "okay"; +};