| Message ID | 20240828-02-k1-pinctrl-v3-1-1fed6a22be98@gentoo.org |
|---|---|
| State | New |
| Headers | show |
| Series | riscv: spacemit: add pinctrl support to K1 SoC | expand |
On Wed, 28 Aug 2024 11:30:23 +0000, Yixun Lan wrote: > Add dt-bindings for the pinctrl driver of SpacemiT's K1 SoC. > > Signed-off-by: Yixun Lan <dlan@gentoo.org> > --- > Changes in v3: > - drop spacemit,slew-rate-{enable,disable} property > - use drive-strength instead of drive-strength-microamp > - fold strong-pull-up into bias-pull-up > - format fixed > - title fixed > --- > .../bindings/pinctrl/spacemit,k1-pinctrl.yaml | 127 +++++++++++++++++++++ > 1 file changed, 127 insertions(+) > Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
On 2024/8/28 19:30, Yixun Lan wrote: > Add dt-bindings for the pinctrl driver of SpacemiT's K1 SoC. > > Signed-off-by: Yixun Lan <dlan@gentoo.org> > --- > Changes in v3: > - drop spacemit,slew-rate-{enable,disable} property > - use drive-strength instead of drive-strength-microamp > - fold strong-pull-up into bias-pull-up > - format fixed > - title fixed Drop this change history here, you can add this in the cover letter. [......]
On Fri, Aug 30, 2024 at 07:48:17AM +0800, Chen Wang wrote: > > On 2024/8/28 19:30, Yixun Lan wrote: > > Add dt-bindings for the pinctrl driver of SpacemiT's K1 SoC. > > > > Signed-off-by: Yixun Lan <dlan@gentoo.org> > > --- > > Changes in v3: > > - drop spacemit,slew-rate-{enable,disable} property > > - use drive-strength instead of drive-strength-microamp > > - fold strong-pull-up into bias-pull-up > > - format fixed > > - title fixed > > Drop this change history here, you can add this in the cover letter. > > [......] It's perfectly fine to provide per-patch changelogs fyi, rather than in the cover letter. Cheers, Conor.
On 30/08/2024 09:06, Conor Dooley wrote: > On Fri, Aug 30, 2024 at 07:48:17AM +0800, Chen Wang wrote: >> >> On 2024/8/28 19:30, Yixun Lan wrote: >>> Add dt-bindings for the pinctrl driver of SpacemiT's K1 SoC. >>> >>> Signed-off-by: Yixun Lan <dlan@gentoo.org> >>> --- >>> Changes in v3: >>> - drop spacemit,slew-rate-{enable,disable} property >>> - use drive-strength instead of drive-strength-microamp >>> - fold strong-pull-up into bias-pull-up >>> - format fixed >>> - title fixed >> >> Drop this change history here, you can add this in the cover letter. >> >> [......] > > It's perfectly fine to provide per-patch changelogs fyi, rather than in > the cover letter. > And honestly, since some time I prefer it much more. Much, much easier to spot which patch changed instead of something in cover letter like: 1. Patch #1: changed foo 2. Patch #3: dropped 3. Patch #4 (so patch #5 or #4?): changed bar Best regards, Krzysztof
diff --git a/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml new file mode 100644 index 0000000000000..166e529b54b27 --- /dev/null +++ b/Documentation/devicetree/bindings/pinctrl/spacemit,k1-pinctrl.yaml @@ -0,0 +1,127 @@ +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/pinctrl/spacemit,k1-pinctrl.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: SpacemiT K1 SoC Pin Controller + +maintainers: + - Yixun Lan <dlan@gentoo.org> + +properties: + compatible: + const: spacemit,k1-pinctrl + + reg: + items: + - description: pinctrl io memory base + +patternProperties: + '-cfg$': + type: object + additionalProperties: false + + description: + A pinctrl node should contain at least one subnode representing the + pinctrl groups available on the machine. + + patternProperties: + '-pins$': + type: object + additionalProperties: false + + description: + Each subnode will list the pins it needs, and how they should + be configured, with regard to muxer configuration, bias pull, + drive strength, input schmitt trigger, slew rate, power source. + + allOf: + - $ref: pincfg-node.yaml# + - $ref: pinmux-node.yaml# + + properties: + pinmux: + description: + The list of GPIOs and their mux settings that properties in the + node apply to. This should be set using the K1_PADCONF macro to + construct the value. + + bias-disable: true + + bias-pull-down: true + + bias-pull-up: + description: | + typical value for selecting bias pull up or strong pull up. + 0: normal bias pull up + 1: strong bias pull up + enum: [ 0, 1 ] + + drive-strength: + description: | + typical current when output high level. + 1.8V output: 11, 21, 32, 42 (mA) + 3.3V output: 7, 10, 13, 16, 19, 23, 26, 29 (mA) + + input-schmitt: + description: | + typical threshold for schmitt trigger. + 0: buffer mode + 1: trigger mode + 2, 3: trigger mode + $ref: /schemas/types.yaml#/definitions/uint32 + enum: [ 0, 1, 2, 3 ] + + power-source: + description: external power supplies at 1.8v or 3.3v. + enum: [ 1800, 3300 ] + + slew-rate: + description: | + slew rate for output buffer. + 0: disable it + 1: enable it (via bundled value from drive strength) + 2: slow speed 0 + 3: slow speed 1 + 4: medium speed + 5: fast speed + enum: [ 0, 1, 2, 3, 4, 5 ] + + required: + - pinmux + +required: + - compatible + - reg + +additionalProperties: false + +examples: + - | + #define GPIO_68 69 + #define GPIO_69 70 + + #define K1_PADCONF(pin, func) (((pin) << 16) | (func)) + + soc { + #address-cells = <2>; + #size-cells = <2>; + + pinctrl@d401e000 { + compatible = "spacemit,k1-pinctrl"; + reg = <0x0 0xd401e000 0x0 0x400>; + + uart0_2_cfg: uart0-2-cfg { + uart0-2-pins { + pinmux = <K1_PADCONF(GPIO_68, 2)>, + <K1_PADCONF(GPIO_69, 2)>; + + bias-pull-up = <0>; + drive-strength = <32>; + }; + }; + }; + }; + +...
Add dt-bindings for the pinctrl driver of SpacemiT's K1 SoC. Signed-off-by: Yixun Lan <dlan@gentoo.org> --- Changes in v3: - drop spacemit,slew-rate-{enable,disable} property - use drive-strength instead of drive-strength-microamp - fold strong-pull-up into bias-pull-up - format fixed - title fixed --- .../bindings/pinctrl/spacemit,k1-pinctrl.yaml | 127 +++++++++++++++++++++ 1 file changed, 127 insertions(+)