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Message-ID: <74f81a77-6cba-37eb-54ed-e7570db47632@linaro.org>
Date: Wed, 19 Jul 2023 21:05:20 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Konrad Dybcio <konrad.dybcio@...aro.org>,
Bjorn Andersson <andersson@...nel.org>,
Andy Gross <agross@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will@...nel.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 2/3] pinctrl: qcom: sm8350-lpass-lpi: add SM8350 LPASS
TLMM
On 24/06/2023 14:12, Konrad Dybcio wrote:
> On 19.06.2023 11:27, Krzysztof Kozlowski wrote:
>> Add driver for pin controller in Low Power Audio SubSystem (LPASS). The
>> driver is similar to SM8250 LPASS pin controller, with difference in one
>> new pin (gpio14).
>>
> < LPI_MUX_swr_tx_data2,
> 54d52
> < static int gpio14_pins[] = { 14 };
> 71d68
> < PINCTRL_PIN(14, "gpio14"),
> 75c72
> < static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5", "gpio14" };
> ---
>> static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5" };
> 111d107
> < LPI_PINGROUP(14, 6, swr_rx_data, _, _, _),
>
>
>
> I really think adding just these pin14 entries to the 8250 driver would
> be a good idea..
>
I could extend arrays with gpio14 and pass array size -1 to sm8250
variant and full size to sm8350. However the difference will be in:
-static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5" };
+static const char * const swr_tx_data_groups[] = { "gpio1", "gpio2", "gpio5", "gpio14" };
I cannot create here variant "swr_tx_data_groups_sm8350" because the
name is used in macros. Using bigger (with gpio14) group for sm8250
should work, because there is no gpio14, but produces difference in the
controller:
-/sys/kernel/debug/pinctrl/33c0000.pinctrl/pinmux-functions:function 18: swr_tx_data, groups = [ gpio1 gpio2 gpio5 ]
+/sys/kernel/debug/pinctrl/33c0000.pinctrl/pinmux-functions:function 18: swr_tx_data, groups = [ gpio1 gpio2 gpio5 gpio14 ]
Therefore I will go with separate drivers.
Best regards,
Krzysztof
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