linux-kernel - Re: [PATCH v3 4/7] arm64: dts: qcom: sc8280xp: add missing i2c nodes

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Message-ID: <Y6WEzkcP31S2JGrL@hovoldconsulting.com>
Date:   Fri, 23 Dec 2022 11:37:02 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Brian Masney <bmasney@...hat.com>
Cc:     andersson@...nel.org, krzysztof.kozlowski+dt@...aro.org,
        quic_shazhuss@...cinc.com, konrad.dybcio@...aro.org,
        robh+dt@...nel.org, johan+linaro@...nel.org,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, ahalaney@...hat.com,
        echanude@...hat.com
Subject: Re: [PATCH v3 4/7] arm64: dts: qcom: sc8280xp: add missing i2c nodes

On Tue, Dec 20, 2022 at 02:28:51PM -0500, Brian Masney wrote:
> Add the missing nodes for the i2c buses that's present on this SoC.
> 
> This work was derived from various patches that Qualcomm delivered
> to Red Hat in a downstream kernel.
> 
> Signed-off-by: Brian Masney <bmasney@...hat.com>
> ---
> Changes from v2 to v3
> - None
> 
> Changes from v1 to v2
> - Dropped qupX_ prefix from labels. (Johan)
> 
>  arch/arm64/boot/dts/qcom/sc8280xp.dtsi | 352 +++++++++++++++++++++++++
>  1 file changed, 352 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> index f1111cd7f679..a502d4e19d98 100644
> --- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
> @@ -813,6 +813,38 @@ qup2: geniqup@...000 {
>  
>  			status = "disabled";
>  
> +			i2c16: i2c@...000 {
> +				compatible = "qcom,geni-i2c";
> +				reg = <0 0x00880000 0 0x4000>;
> +				clocks = <&gcc GCC_QUPV3_WRAP2_S0_CLK>;
> +				clock-names = "se";
> +				interrupts = <GIC_SPI 373 IRQ_TYPE_LEVEL_HIGH>;
> +				#address-cells = <1>;
> +				#size-cells = <0>;

I'm aware that the two current i2c nodes has these two properties here
in the middle, but would you mind moving '#address-cells' and
'#size-cells' after 'reg' instead where I'd expect them to be?

Same for the spi patch.

I can clean up the existing two nodes (and binding example) unless you
want to do it.

> +				power-domains = <&rpmhpd SC8280XP_CX>;
> +				interconnects = <&clk_virt MASTER_QUP_CORE_2 0 &clk_virt SLAVE_QUP_CORE_2 0>,
> +				                <&gem_noc MASTER_APPSS_PROC 0 &config_noc SLAVE_QUP_2 0>,
> +				                <&aggre1_noc MASTER_QUP_2 0 &mc_virt SLAVE_EBI1 0>;
> +				interconnect-names = "qup-core", "qup-config", "qup-memory";
> +				status = "disabled";
> +			};

Johan