Re: [PATCH V9 4/8] arm64: dts: sc7280: Add QUPv3 wrapper_0 nodes

From: rajpat
Date: Thu Sep 23 2021 - 06:13:50 EST


On 2021-09-22 20:24, Doug Anderson wrote:
Hi,

On Wed, Sep 22, 2021 at 5:31 AM <rajpat@xxxxxxxxxxxxxx> wrote:

>> + spi0: spi@980000 {
>> + compatible = "qcom,geni-spi";
>> + reg = <0 0x00980000 0 0x4000>;
>> + clocks = <&gcc
>> GCC_QUPV3_WRAP0_S0_CLK>;
>> + clock-names = "se";
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&qup_spi0_data_clk>,
>> <&qup_spi0_cs>, <&qup_spi0_cs_gpio>;
>
> This should only have qup_spi0_data_clk and qup_spi0_cs, not
> qup_spi0_cs_gpio. Both qup controlled and gpio controlled options are
> provided in case a board wants to use the qup version of chipselect,
> but
> having them both used by default leads to conflicts and confusion. This
> same comment applies to all spi pinctrl properties in this file. Please
> keep the cs_gpio variants though so that boards can use them if they
> want. They will be unused, but that's OK.

Okay. Shall we remove only "<&qup_spiN_cs_gpio>" in each SPI node?

Right. So for this one:

pinctrl-0 = <&qup_spi0_data_clk>, <&qup_spi0_cs>;

-Doug

Okay.