[U-Boot] [PATCH 4/5] sun50i: a64: add support for R_I2C controller

[Maxime Ripard]

Hi,

On Sat, Sep 29, 2018 at 04:45:52PM -0700, Vagrant Cascadian wrote:
> From: Vasily Khoruzhick <anarsoul at gmail.com>
> 
> Allwinner A64 has a I2C controller, which is in the R_ MMIO zone and has
> two groups of pinmuxes on PL bank, so it's called R_I2C.
> 
> Add support for this I2C controller and the pinmux which doesn't conflict
> with RSB
> 
> Signed-off-by: Vasily Khoruzhick <anarsoul at gmail.com>
> Signed-off-by: Vagrant Cascadian <vagrant at debian.org>
> ---
> 
>  arch/arm/dts/sun50i-a64.dtsi           | 17 +++++++++++++++++
>  arch/arm/include/asm/arch-sunxi/gpio.h |  1 +
>  arch/arm/mach-sunxi/Kconfig            |  1 +
>  board/sunxi/board.c                    |  6 ++++++
>  4 files changed, 25 insertions(+)
> 
> diff --git a/arch/arm/dts/sun50i-a64.dtsi b/arch/arm/dts/sun50i-a64.dtsi
> index 7a083637c4..80ddcf0af3 100644
> --- a/arch/arm/dts/sun50i-a64.dtsi
> +++ b/arch/arm/dts/sun50i-a64.dtsi
> @@ -627,6 +627,18 @@
>  			};
>  		};
>  
> +		r_i2c: i2c at 1f02400 {
> +			compatible = "allwinner,sun50i-a64-i2c",
> +				     "allwinner,sun6i-a31-i2c";
> +			reg = <0x01f02400 0x400>;
> +			interrupts = <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>;
> +			clocks = <&r_ccu 9>;
> +			resets = <&r_ccu 5>;
> +			status = "disabled";
> +			#address-cells = <1>;
> +			#size-cells = <0>;
> +		};
> +
>  		gic: interrupt-controller at 1c81000 {
>  			compatible = "arm,gic-400";
>  			reg = <0x01c81000 0x1000>,
> @@ -679,6 +691,11 @@
>  				pins = "PL0", "PL1";
>  				function = "s_rsb";
>  			};
> +
> +			r_i2c_pins_a: i2c-a {
> +				pins = "PL8", "PL9";
> +				function = "s_i2c";
> +			};

These changes are in the Linux DT, so we'd be better off syncing that
DT, instead of adding just those two nodes.

Thanks!
Maxime

-- 
Maxime Ripard, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
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