Re: [PATCH 1/2] arm64: dts: berlin4ct: add I2C nodes for BG4CT

Sebastian Hesselbarth
2015-11-20T21:22:00Z

On 20.11.2015 10:47, Jisheng Zhang wrote:
> The Marvell Berlin BG4CT SoC has 4 TWSI which are compatible with the
> Synopsys DesignWare I2C driver. Add the corresponding nodes.
>
> Signed-off-by: Jisheng Zhang <jszhang@marvell.com>
> ---
> arch/arm64/boot/dts/marvell/berlin4ct.dtsi | 52 ++++++++++++++++++++++++++++++
> 1 file changed, 52 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/marvell/berlin4ct.dtsi b/arch/arm64/boot/dts/marvell/berlin4ct.dtsi
> index cca4c41..39d0676 100644
> --- a/arch/arm64/boot/dts/marvell/berlin4ct.dtsi
> +++ b/arch/arm64/boot/dts/marvell/berlin4ct.dtsi
> @@ -232,6 +232,32 @@
> };
> };
>
> + i2c0: i2c@1400 {
> + compatible = "snps,designware-i2c";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x1400 0x100>;
> + clocks = <&clk CLK_APBCORE>;

This patch looks fine to me, except that clock node naming and
clock indices may change. We should really postpone this series
until we worked out clock.

Sebastian

> + i2c-sda-hold-time-ns = <35>;
> + i2c-sda-falling-time-ns = <425>;
> + i2c-scl-falling-time-ns = <205>;
> + interrupts = <4>;
> + status = "disabled";
> + };
> +
> + i2c1: i2c@1800 {
> + compatible = "snps,designware-i2c";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0x1800 0x100>;
> + clocks = <&clk CLK_APBCORE>;
> + i2c-sda-hold-time-ns = <35>;
> + i2c-sda-falling-time-ns = <425>;
> + i2c-scl-falling-time-ns = <205>;
> + interrupts = <5>;
> + status = "disabled";
> + };
> +
> aic: interrupt-controller@3800 {
> compatible = "snps,dw-apb-ictl";
> reg = <0x3800 0x30>;
> @@ -319,6 +345,32 @@
> };
> };
>
> + i2c2: i2c@b000 {
> + compatible = "snps,designware-i2c";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0xb000 0x100>;
> + clocks = <&osc>;
> + i2c-sda-hold-time-ns = <140>;
> + i2c-sda-falling-time-ns = <500>;
> + i2c-scl-falling-time-ns = <220>;
> + interrupts = <6>;
> + status = "disabled";
> + };
> +
> + i2c3: i2c@c000 {
> + compatible = "snps,designware-i2c";
> + #address-cells = <1>;
> + #size-cells = <0>;
> + reg = <0xc000 0x100>;
> + clocks = <&osc>;
> + i2c-sda-hold-time-ns = <140>;
> + i2c-sda-falling-time-ns = <500>;
> + i2c-scl-falling-time-ns = <220>;
> + interrupts = <7>;
> + status = "disabled";
> + };
> +
> uart0: uart@d000 {
> compatible = "snps,dw-apb-uart";
> reg = <0xd000 0x100>;
>