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Message-ID: <20251013191235.4139259-1-robh@kernel.org>
Date: Mon, 13 Oct 2025 14:12:33 -0500
From: "Rob Herring (Arm)" <robh@...nel.org>
To: Linus Walleij <linus.walleij@...aro.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Manivannan Sadhasivam <mani@...nel.org>
Cc: linux-gpio@...r.kernel.org,
devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] dt-bindings: pinctrl: Convert bitmain,bm1880-pinctrl to DT schema
Convert the bitmain,bm1880-pinctrl binding to DT schema format. It's a
straight-forward conversion.
Signed-off-by: Rob Herring (Arm) <robh@...nel.org>
---
.../pinctrl/bitmain,bm1880-pinctrl.txt | 126 -----------------
.../pinctrl/bitmain,bm1880-pinctrl.yaml | 132 ++++++++++++++++++
MAINTAINERS | 2 +-
3 files changed, 133 insertions(+), 127 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
create mode 100644 Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
deleted file mode 100644
index 4980776122cc..000000000000
--- a/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
+++ /dev/null
@@ -1,126 +0,0 @@
-Bitmain BM1880 Pin Controller
-
-This binding describes the pin controller found in the BM1880 SoC.
-
-Required Properties:
-
-- compatible: Should be "bitmain,bm1880-pinctrl"
-- reg: Offset and length of pinctrl space in SCTRL.
-
-Please refer to pinctrl-bindings.txt in this directory for details of the
-common pinctrl bindings used by client devices, including the meaning of the
-phrase "pin configuration node".
-
-The pin configuration nodes act as a container for an arbitrary number of
-subnodes. Each of these subnodes represents some desired configuration for a
-pin, a group, or a list of pins or groups. This configuration for BM1880 SoC
-includes pinmux and various pin configuration parameters, such as pull-up,
-slew rate etc...
-
-Each configuration node can consist of multiple nodes describing the pinmux
-options. The name of each subnode is not important; all subnodes should be
-enumerated and processed purely based on their content.
-
-The following generic properties as defined in pinctrl-bindings.txt are valid
-to specify in a pinmux subnode:
-
-Required Properties:
-
-- pins: An array of strings, each string containing the name of a pin.
- Valid values for pins are:
-
- MIO0 - MIO111
-
-- groups: An array of strings, each string containing the name of a pin
- group. Valid values for groups are:
-
- nand_grp, spi_grp, emmc_grp, sdio_grp, eth0_grp, pwm0_grp,
- pwm1_grp, pwm2_grp, pwm3_grp, pwm4_grp, pwm5_grp, pwm6_grp,
- pwm7_grp, pwm8_grp, pwm9_grp, pwm10_grp, pwm11_grp, pwm12_grp,
- pwm13_grp, pwm14_grp, pwm15_grp, pwm16_grp, pwm17_grp,
- pwm18_grp, pwm19_grp, pwm20_grp, pwm21_grp, pwm22_grp,
- pwm23_grp, pwm24_grp, pwm25_grp, pwm26_grp, pwm27_grp,
- pwm28_grp, pwm29_grp, pwm30_grp, pwm31_grp, pwm32_grp,
- pwm33_grp, pwm34_grp, pwm35_grp, pwm36_grp, i2c0_grp,
- i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, uart0_grp, uart1_grp,
- uart2_grp, uart3_grp, uart4_grp, uart5_grp, uart6_grp,
- uart7_grp, uart8_grp, uart9_grp, uart10_grp, uart11_grp,
- uart12_grp, uart13_grp, uart14_grp, uart15_grp, gpio0_grp,
- gpio1_grp, gpio2_grp, gpio3_grp, gpio4_grp, gpio5_grp,
- gpio6_grp, gpio7_grp, gpio8_grp, gpio9_grp, gpio10_grp,
- gpio11_grp, gpio12_grp, gpio13_grp, gpio14_grp, gpio15_grp,
- gpio16_grp, gpio17_grp, gpio18_grp, gpio19_grp, gpio20_grp,
- gpio21_grp, gpio22_grp, gpio23_grp, gpio24_grp, gpio25_grp,
- gpio26_grp, gpio27_grp, gpio28_grp, gpio29_grp, gpio30_grp,
- gpio31_grp, gpio32_grp, gpio33_grp, gpio34_grp, gpio35_grp,
- gpio36_grp, gpio37_grp, gpio38_grp, gpio39_grp, gpio40_grp,
- gpio41_grp, gpio42_grp, gpio43_grp, gpio44_grp, gpio45_grp,
- gpio46_grp, gpio47_grp, gpio48_grp, gpio49_grp, gpio50_grp,
- gpio51_grp, gpio52_grp, gpio53_grp, gpio54_grp, gpio55_grp,
- gpio56_grp, gpio57_grp, gpio58_grp, gpio59_grp, gpio60_grp,
- gpio61_grp, gpio62_grp, gpio63_grp, gpio64_grp, gpio65_grp,
- gpio66_grp, gpio67_grp, eth1_grp, i2s0_grp, i2s0_mclkin_grp,
- i2s1_grp, i2s1_mclkin_grp, spi0_grp
-
-- function: An array of strings, each string containing the name of the
- pinmux functions. The following are the list of pinmux
- functions available:
-
- nand, spi, emmc, sdio, eth0, pwm0, pwm1, pwm2, pwm3, pwm4,
- pwm5, pwm6, pwm7, pwm8, pwm9, pwm10, pwm11, pwm12, pwm13,
- pwm14, pwm15, pwm16, pwm17, pwm18, pwm19, pwm20, pwm21, pwm22,
- pwm23, pwm24, pwm25, pwm26, pwm27, pwm28, pwm29, pwm30, pwm31,
- pwm32, pwm33, pwm34, pwm35, pwm36, i2c0, i2c1, i2c2, i2c3,
- i2c4, uart0, uart1, uart2, uart3, uart4, uart5, uart6, uart7,
- uart8, uart9, uart10, uart11, uart12, uart13, uart14, uart15,
- gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6, gpio7, gpio8,
- gpio9, gpio10, gpio11, gpio12, gpio13, gpio14, gpio15, gpio16,
- gpio17, gpio18, gpio19, gpio20, gpio21, gpio22, gpio23,
- gpio24, gpio25, gpio26, gpio27, gpio28, gpio29, gpio30,
- gpio31, gpio32, gpio33, gpio34, gpio35, gpio36, gpio37,
- gpio38, gpio39, gpio40, gpio41, gpio42, gpio43, gpio44,
- gpio45, gpio46, gpio47, gpio48, gpio49, gpio50, gpio51,
- gpio52, gpio53, gpio54, gpio55, gpio56, gpio57, gpio58,
- gpio59, gpio60, gpio61, gpio62, gpio63, gpio64, gpio65,
- gpio66, gpio67, eth1, i2s0, i2s0_mclkin, i2s1, i2s1_mclkin,
- spi0
-
-Optional Properties:
-
-- bias-disable: No arguments. Disable pin bias.
-- bias-pull-down: No arguments. The specified pins should be configured as
- pull down.
-- bias-pull-up: No arguments. The specified pins should be configured as
- pull up.
-- input-schmitt-enable: No arguments: Enable schmitt trigger for the specified
- pins
-- input-schmitt-disable: No arguments: Disable schmitt trigger for the specified
- pins
-- slew-rate: Integer. Sets slew rate for the specified pins.
- Valid values are:
- <0> - Slow
- <1> - Fast
-- drive-strength: Integer. Selects the drive strength for the specified
- pins in mA.
- Valid values are:
- <4>
- <8>
- <12>
- <16>
- <20>
- <24>
- <28>
- <32>
-
-Example:
- pinctrl: pinctrl@400 {
- compatible = "bitmain,bm1880-pinctrl";
- reg = <0x400 0x120>;
-
- pinctrl_uart0_default: uart0-default {
- pinmux {
- groups = "uart0_grp";
- function = "uart0";
- };
- };
- };
diff --git a/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.yaml
new file mode 100644
index 000000000000..542be9870838
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.yaml
@@ -0,0 +1,132 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/bitmain,bm1880-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Bitmain BM1880 Pin Controller
+
+maintainers:
+ - Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
+
+properties:
+ compatible:
+ const: bitmain,bm1880-pinctrl
+
+ reg:
+ maxItems: 1
+
+additionalProperties:
+ description: A pin configuration node.
+ type: object
+ additionalProperties: false
+
+ properties:
+ pinmux:
+ type: object
+ description: Pin multiplexing parameters.
+ allOf:
+ - $ref: /schemas/pinctrl/pincfg-node.yaml#
+ - $ref: /schemas/pinctrl/pinmux-node.yaml#
+ additionalProperties: false
+
+ properties:
+ pins:
+ items:
+ pattern: '^MIO[0-9]+$'
+
+ groups:
+ items:
+ enum: [
+ nand_grp, spi_grp, emmc_grp, sdio_grp, eth0_grp, pwm0_grp,
+ pwm1_grp, pwm2_grp, pwm3_grp, pwm4_grp, pwm5_grp, pwm6_grp,
+ pwm7_grp, pwm8_grp, pwm9_grp, pwm10_grp, pwm11_grp, pwm12_grp,
+ pwm13_grp, pwm14_grp, pwm15_grp, pwm16_grp, pwm17_grp,
+ pwm18_grp, pwm19_grp, pwm20_grp, pwm21_grp, pwm22_grp,
+ pwm23_grp, pwm24_grp, pwm25_grp, pwm26_grp, pwm27_grp,
+ pwm28_grp, pwm29_grp, pwm30_grp, pwm31_grp, pwm32_grp,
+ pwm33_grp, pwm34_grp, pwm35_grp, pwm36_grp, i2c0_grp,
+ i2c1_grp, i2c2_grp, i2c3_grp, i2c4_grp, uart0_grp, uart1_grp,
+ uart2_grp, uart3_grp, uart4_grp, uart5_grp, uart6_grp,
+ uart7_grp, uart8_grp, uart9_grp, uart10_grp, uart11_grp,
+ uart12_grp, uart13_grp, uart14_grp, uart15_grp, gpio0_grp,
+ gpio1_grp, gpio2_grp, gpio3_grp, gpio4_grp, gpio5_grp,
+ gpio6_grp, gpio7_grp, gpio8_grp, gpio9_grp, gpio10_grp,
+ gpio11_grp, gpio12_grp, gpio13_grp, gpio14_grp, gpio15_grp,
+ gpio16_grp, gpio17_grp, gpio18_grp, gpio19_grp, gpio20_grp,
+ gpio21_grp, gpio22_grp, gpio23_grp, gpio24_grp, gpio25_grp,
+ gpio26_grp, gpio27_grp, gpio28_grp, gpio29_grp, gpio30_grp,
+ gpio31_grp, gpio32_grp, gpio33_grp, gpio34_grp, gpio35_grp,
+ gpio36_grp, gpio37_grp, gpio38_grp, gpio39_grp, gpio40_grp,
+ gpio41_grp, gpio42_grp, gpio43_grp, gpio44_grp, gpio45_grp,
+ gpio46_grp, gpio47_grp, gpio48_grp, gpio49_grp, gpio50_grp,
+ gpio51_grp, gpio52_grp, gpio53_grp, gpio54_grp, gpio55_grp,
+ gpio56_grp, gpio57_grp, gpio58_grp, gpio59_grp, gpio60_grp,
+ gpio61_grp, gpio62_grp, gpio63_grp, gpio64_grp, gpio65_grp,
+ gpio66_grp, gpio67_grp, eth1_grp, i2s0_grp, i2s0_mclkin_grp,
+ i2s1_grp, i2s1_mclkin_grp, spi0_grp
+ ]
+
+ function:
+ items:
+ enum: [
+ nand, spi, emmc, sdio, eth0, pwm0, pwm1, pwm2, pwm3, pwm4,
+ pwm5, pwm6, pwm7, pwm8, pwm9, pwm10, pwm11, pwm12, pwm13,
+ pwm14, pwm15, pwm16, pwm17, pwm18, pwm19, pwm20, pwm21, pwm22,
+ pwm23, pwm24, pwm25, pwm26, pwm27, pwm28, pwm29, pwm30, pwm31,
+ pwm32, pwm33, pwm34, pwm35, pwm36, i2c0, i2c1, i2c2, i2c3,
+ i2c4, uart0, uart1, uart2, uart3, uart4, uart5, uart6, uart7,
+ uart8, uart9, uart10, uart11, uart12, uart13, uart14, uart15,
+ gpio0, gpio1, gpio2, gpio3, gpio4, gpio5, gpio6, gpio7, gpio8,
+ gpio9, gpio10, gpio11, gpio12, gpio13, gpio14, gpio15, gpio16,
+ gpio17, gpio18, gpio19, gpio20, gpio21, gpio22, gpio23,
+ gpio24, gpio25, gpio26, gpio27, gpio28, gpio29, gpio30,
+ gpio31, gpio32, gpio33, gpio34, gpio35, gpio36, gpio37,
+ gpio38, gpio39, gpio40, gpio41, gpio42, gpio43, gpio44,
+ gpio45, gpio46, gpio47, gpio48, gpio49, gpio50, gpio51,
+ gpio52, gpio53, gpio54, gpio55, gpio56, gpio57, gpio58,
+ gpio59, gpio60, gpio61, gpio62, gpio63, gpio64, gpio65,
+ gpio66, gpio67, eth1, i2s0, i2s0_mclkin, i2s1, i2s1_mclkin,
+ spi0
+ ]
+
+ bias-disable: true
+ bias-pull-down: true
+ bias-pull-up: true
+ input-schmitt-enable: true
+ input-schmitt-disable: true
+
+ slew-rate:
+ description: >
+ Sets slew rate. Valid values: 0 = Slow, 1 = Fast.
+ enum: [0, 1]
+
+ drive-strength:
+ enum: [4, 8, 12, 16, 20, 24, 28, 32]
+
+ oneOf:
+ - required:
+ - pins
+ - required:
+ - groups
+
+ required:
+ - function
+
+required:
+ - compatible
+ - reg
+
+examples:
+ - |
+ pinctrl@400 {
+ compatible = "bitmain,bm1880-pinctrl";
+ reg = <0x400 0x120>;
+
+ uart0-default {
+ pinmux {
+ groups = "uart0_grp";
+ function = "uart0";
+ };
+ };
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 04193ceb9365..e72a9e529625 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2529,7 +2529,7 @@ L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
S: Maintained
F: Documentation/devicetree/bindings/arm/bitmain.yaml
F: Documentation/devicetree/bindings/clock/bitmain,bm1880-clk.yaml
-F: Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.txt
+F: Documentation/devicetree/bindings/pinctrl/bitmain,bm1880-pinctrl.yaml
F: arch/arm64/boot/dts/bitmain/
F: drivers/clk/clk-bm1880.c
F: drivers/pinctrl/pinctrl-bm1880.c
--
2.51.0
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