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Date:   Mon, 23 Aug 2021 08:28:17 -0700
From:   Bjorn Andersson <bjorn.andersson@linaro.org>
To:     Konrad Dybcio <konrad.dybcio@somainline.org>
Cc:     ~postmarketos/upstreaming@lists.sr.ht, martin.botka@somainline.org,
        angelogioacchino.delregno@somainline.org,
        marijn.suijten@somainline.org, jamipkettunen@somainline.org,
        Andy Gross <agross@kernel.org>,
        Linus Walleij <linus.walleij@linaro.org>,
        Rob Herring <robh+dt@kernel.org>,
        linux-arm-msm@vger.kernel.org, linux-gpio@vger.kernel.org,
        devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: pinctrl: qcom: Add SM6350 pinctrl
 bindings
Message-ID: <YSO+kQnDsqcaBIOg@ripper>
References: <20210820203751.232645-1-konrad.dybcio@somainline.org>
 <20210820203751.232645-2-konrad.dybcio@somainline.org>
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In-Reply-To: <20210820203751.232645-2-konrad.dybcio@somainline.org>
Precedence: bulk

On Fri 20 Aug 13:37 PDT 2021, Konrad Dybcio wrote:

> Add device tree binding Documentation details for Qualcomm SM6350
> pinctrl driver.
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
> ---
>  .../bindings/pinctrl/qcom,sm6350-pinctrl.yaml | 156 ++++++++++++++++++
>  .../bindings/pinctrl/qcom,tlmm-common.yaml    |   2 +-
>  2 files changed, 157 insertions(+), 1 deletion(-)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,sm6350-pinctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,sm6350-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,sm6350-pinctrl.yaml
> new file mode 100644
> index 000000000000..e4d8b7a044e6
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,sm6350-pinctrl.yaml
> @@ -0,0 +1,156 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/qcom,sm6350-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Technologies, Inc. SM6350 TLMM block
> +
> +maintainers:
> +  - Konrad Dybcio <konrad.dybcio@somainline.org>
> +
> +description: |
> +  This binding describes the Top Level Mode Multiplexer (TLMM) block found
> +  in the SM6350 platform.
> +
> +allOf:
> +  - $ref: /schemas/pinctrl/qcom,tlmm-common.yaml#
> +
> +properties:
> +  compatible:
> +    const: qcom,sm6350-tlmm
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts: true
> +  interrupt-controller: true
> +  '#interrupt-cells': true
> +  gpio-controller: true
> +  gpio-reserved-ranges: true
> +  '#gpio-cells': true
> +  gpio-ranges: true
> +  wakeup-parent: true
> +
> +required:
> +  - compatible
> +  - reg
> +
> +additionalProperties: false
> +
> +patternProperties:
> +  '-state$':
> +    oneOf:
> +      - $ref: "#/$defs/qcom-sm6350-tlmm-state"
> +      - patternProperties:
> +          ".*":
> +            $ref: "#/$defs/qcom-sm6350-tlmm-state"
> +
> +$defs:
> +  qcom-sm6350-tlmm-state:
> +    type: object
> +    description:
> +      Pinctrl node's client devices use subnodes for desired pin configuration.
> +      Client device subnodes use below standard properties.
> +    $ref: "qcom,tlmm-common.yaml#/$defs/qcom-tlmm-state"
> +
> +    properties:
> +      pins:
> +        description:
> +          List of gpio pins affected by the properties specified in this
> +          subnode.
> +        items:
> +          oneOf:
> +            - pattern: "^gpio([0-9]|[1-9][0-9]|1[0-9][0-9]|20[0-3])$"

"^gpio([0-9]|[1-9][0-9]|1[0-4][0-9]|15[0-7])$"

> +            - enum: [ sdc1_clk, sdc1_cmd, sdc1_data, sdc2_clk, sdc2_cmd, sdc2_data ]
> +        minItems: 1
> +        maxItems: 36
> +
> +      function:
> +        description:
> +          Specify the alternative function to be configured for the specified
> +          pins.
> +
> +        enum: [ adsp_ext, agera_pll, atest_char, atest_char0, atest_char1, atest_char2,
> +                atest_char3, atest_tsens, atest_tsens2, atest_usb1, atest_usb10, atest_usb11,
> +                atest_usb12, atest_usb13, atest_usb2, atest_usb20, atest_usb21, atest_usb22,
> +                atest_usb23, audio_ref, btfm_slimbus, cam_mclk0, cam_mclk1, cam_mclk2, cam_mclk3,
> +                cam_mclk4, cci_async, cci_i2c, cci_timer0, cci_timer1, cci_timer2, cci_timer3,
> +                cci_timer4, cri_trng, dbg_out, ddr_bist, ddr_pxi0, ddr_pxi1, ddr_pxi2, ddr_pxi3,
> +                dp_hot, edp_lcd, gcc_gp1, gcc_gp2, gcc_gp3, gp_pdm0, gp_pdm1, gp_pdm2, gpio,
> +                gps_tx, ibi_i3c, jitter_bist, ldo_en, ldo_update, lpass_ext, m_voc, mclk,
> +                mdp_vsync, mdp_vsync0, mdp_vsync1, mdp_vsync2, mdp_vsync3, mi2s_0, mi2s_1, mi2s_2,
> +                mss_lte, nav_gpio, nav_pps, pa_indicator, pcie0_clk, phase_flag0, phase_flag1,
> +                phase_flag10, phase_flag11, phase_flag12, phase_flag13, phase_flag14, phase_flag15,
> +                phase_flag16, phase_flag17, phase_flag18, phase_flag19, phase_flag2, phase_flag20,
> +                phase_flag21, phase_flag22, phase_flag23, phase_flag24, phase_flag25, phase_flag26,
> +                phase_flag27, phase_flag28, phase_flag29, phase_flag3, phase_flag30, phase_flag31,
> +                phase_flag4, phase_flag5, phase_flag6, phase_flag7, phase_flag8, phase_flag9,
> +                pll_bist, pll_bypassnl, pll_reset, prng_rosc, qdss_cti, qdss_gpio, qdss_gpio0,
> +                qdss_gpio1, qdss_gpio10, qdss_gpio11, qdss_gpio12, qdss_gpio13, qdss_gpio14,
> +                qdss_gpio15, qdss_gpio2, qdss_gpio3, qdss_gpio4, qdss_gpio5, qdss_gpio6,
> +                qdss_gpio7, qdss_gpio8, qdss_gpio9, qlink0_enable, qlink0_request, qlink0_wmss,
> +                qlink1_enable, qlink1_request, qlink1_wmss, qup00, qup01, qup02, qup10, qup11,
> +                qup12, qup13_f1, qup13_f2, qup14, rffe0_clk, rffe0_data, rffe1_clk, rffe1_data,
> +                rffe2_clk, rffe2_data, rffe3_clk, rffe3_data, rffe4_clk, rffe4_data, sd_write,
> +                sdc1_tb, sdc2_tb, sp_cmu, tgu_ch0, tgu_ch1, tgu_ch2, tgu_ch3, tsense_pwm1,
> +                tsense_pwm2, uim1_clk, uim1_data, uim1_present, uim1_reset, uim2_clk, uim2_data,
> +                uim2_present, uim2_reset, usb_phy, vfr_1, vsense_trigger, wlan1_adc0, wlan1_adc1,
> +                wlan2_adc0, wlan2_adc1, ]
> +
> +
> +      bias-disable: true
> +      bias-pull-down: true
> +      bias-pull-up: true
> +      drive-strength: true
> +      input-enable: true
> +      output-high: true
> +      output-low: true
> +
> +    required:
> +      - pins
> +      - function
> +
> +    additionalProperties: false
> +
> +examples:
> +  - |
> +        #include <dt-bindings/interrupt-controller/arm-gic.h>
> +        pinctrl@f100000 {
> +                compatible = "qcom,sm6350-tlmm";
> +                reg = <0x0f100000 0x300000>;
> +                interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 209 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 210 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 211 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 212 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 213 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 214 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 215 IRQ_TYPE_LEVEL_HIGH>,
> +                            <GIC_SPI 216 IRQ_TYPE_LEVEL_HIGH>;
> +                gpio-controller;
> +                #gpio-cells = <2>;
> +                interrupt-controller;
> +                #interrupt-cells = <2>;
> +                gpio-ranges = <&tlmm 0 0 156>;

Shouldn't this be 157?

> +
> +                gpio-wo-subnode-state {
> +                        pins = "gpio1";
> +                        function = "gpio";
> +                };
> +
> +                uart-w-subnodes-state {
> +                        rx {
> +                                pins = "gpio25";
> +                                function = "qup13_f2";
> +                                bias-disable;
> +                        };
> +
> +                        tx {
> +                                pins = "gpio26";
> +                                function = "qup13_f2";
> +                                bias-disable;
> +                        };
> +                };
> +        };
> +...
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml
> index 3b37cf102d41..99975122a2ce 100644
> --- a/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,tlmm-common.yaml
> @@ -17,7 +17,7 @@ properties:
>    interrupts:
>      description:
>        Specifies the TLMM summary IRQ
> -    maxItems: 1
> +    maxItems: 9

Is this to support direct connected interrupts?

Don't you need to add minItems: 1, to permit the other bindings to not
define these? I think that's what Rob's automatic reply complains about
at least.


PS. Any plans to work up support for direct connected interrupts? I
think that and "egpio" is the only downstream delta these days... That
said, I don't know if anyone actually uses direct connected interrupts?

Regards,
Bjorn