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Message-Id: <20210908151246.8781-1-jbx6244@gmail.com>
Date: Wed, 8 Sep 2021 17:12:46 +0200
From: Johan Jonker <jbx6244@...il.com>
To: heiko@...ech.de
Cc: robh+dt@...nel.org, linus.walleij@...aro.org,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v1] dt-bindings: pinctrl: convert rockchip,pinctrl.txt to YAML
Convert rockchip,pinctrl.txt to YAML
Signed-off-by: Johan Jonker <jbx6244@...il.com>
---
Note for rob+dt:
To reduce notifications and to support legacy DT the patternProperties
regex is:
"gpio[0-8]?@[0-9a-f]+$"
or should we move to:
"gpio@[0-9a-f]+$"
and change all Rockchip pinctrl DT nodes?
Is the Linux driver / U-boot ready for it now?
---
.../bindings/pinctrl/rockchip,pinctrl.txt | 114 -----------
.../bindings/pinctrl/rockchip,pinctrl.yaml | 178 ++++++++++++++++++
2 files changed, 178 insertions(+), 114 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
create mode 100644 Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.yaml
diff --git a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
deleted file mode 100644
index 84c411129..000000000
--- a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.txt
+++ /dev/null
@@ -1,114 +0,0 @@
-* Rockchip Pinmux Controller
-
-The Rockchip Pinmux Controller, enables the IC
-to share one PAD to several functional blocks. The sharing is done by
-multiplexing the PAD input/output signals. For each PAD there are several
-muxing options with option 0 being the use as a GPIO.
-
-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 Rockchip pin configuration node is a node of a group of pins which can be
-used for a specific device or function. This node represents both mux and
-config of the pins in that group. The 'pins' selects the function mode(also
-named pin mode) this pin can work on and the 'config' configures various pad
-settings such as pull-up, etc.
-
-The pins are grouped into up to 5 individual pin banks which need to be
-defined as gpio sub-nodes of the pinmux controller.
-
-Required properties for iomux controller:
- - compatible: should be
- "rockchip,px30-pinctrl": for Rockchip PX30
- "rockchip,rv1108-pinctrl": for Rockchip RV1108
- "rockchip,rk2928-pinctrl": for Rockchip RK2928
- "rockchip,rk3066a-pinctrl": for Rockchip RK3066a
- "rockchip,rk3066b-pinctrl": for Rockchip RK3066b
- "rockchip,rk3128-pinctrl": for Rockchip RK3128
- "rockchip,rk3188-pinctrl": for Rockchip RK3188
- "rockchip,rk3228-pinctrl": for Rockchip RK3228
- "rockchip,rk3288-pinctrl": for Rockchip RK3288
- "rockchip,rk3308-pinctrl": for Rockchip RK3308
- "rockchip,rk3328-pinctrl": for Rockchip RK3328
- "rockchip,rk3368-pinctrl": for Rockchip RK3368
- "rockchip,rk3399-pinctrl": for Rockchip RK3399
- "rockchip,rk3568-pinctrl": for Rockchip RK3568
-
- - rockchip,grf: phandle referencing a syscon providing the
- "general register files"
-
-Optional properties for iomux controller:
- - rockchip,pmu: phandle referencing a syscon providing the pmu registers
- as some SoCs carry parts of the iomux controller registers there.
- Required for at least rk3188 and rk3288. On the rk3368 this should
- point to the PMUGRF syscon.
-
-Deprecated properties for iomux controller:
- - reg: first element is the general register space of the iomux controller
- It should be large enough to contain also separate pull registers.
- second element is the separate pull register space of the rk3188.
- Use rockchip,grf and rockchip,pmu described above instead.
-
-Required properties for gpio sub nodes:
-See rockchip,gpio-bank.yaml
-
-Required properties for pin configuration node:
- - rockchip,pins: 3 integers array, represents a group of pins mux and config
- setting. The format is rockchip,pins = <PIN_BANK PIN_BANK_IDX MUX &phandle>.
- The MUX 0 means gpio and MUX 1 to N mean the specific device function.
- The phandle of a node containing the generic pinconfig options
- to use, as described in pinctrl-bindings.txt in this directory.
-
-Examples:
-
-#include <dt-bindings/pinctrl/rockchip.h>
-
-...
-
-pinctrl@...08000 {
- compatible = "rockchip,rk3066a-pinctrl";
- rockchip,grf = <&grf>;
-
- #address-cells = <1>;
- #size-cells = <1>;
- ranges;
-
- gpio0: gpio0@...34000 {
- compatible = "rockchip,gpio-bank";
- reg = <0x20034000 0x100>;
- interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clk_gates8 9>;
-
- gpio-controller;
- #gpio-cells = <2>;
-
- interrupt-controller;
- #interrupt-cells = <2>;
- };
-
- ...
-
- pcfg_pull_default: pcfg_pull_default {
- bias-pull-pin-default
- };
-
- uart2 {
- uart2_xfer: uart2-xfer {
- rockchip,pins = <1 RK_PB0 1 &pcfg_pull_default>,
- <1 RK_PB1 1 &pcfg_pull_default>;
- };
- };
-};
-
-uart2: serial@...64000 {
- compatible = "snps,dw-apb-uart";
- reg = <0x20064000 0x400>;
- interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
- reg-shift = <2>;
- reg-io-width = <1>;
- clocks = <&mux_uart2>;
-
- pinctrl-names = "default";
- pinctrl-0 = <&uart2_xfer>;
-};
diff --git a/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.yaml
new file mode 100644
index 000000000..7c45122d3
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/rockchip,pinctrl.yaml
@@ -0,0 +1,178 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/rockchip,pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip Pinmux Controller
+
+maintainers:
+ - Heiko Stuebner <heiko@...ech.de>
+
+description:
+ The Rockchip Pinmux Controller enables the IC to share one PAD
+ to several functional blocks. The sharing is done by multiplexing
+ the PAD input/output signals. For each PAD there are several muxing
+ options with option 0 being the use as a GPIO.
+
+ 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 Rockchip pin configuration node is a node of a group of pins which can be
+ used for a specific device or function. This node represents both mux and
+ config of the pins in that group. The 'pins' selects the function mode(also
+ named pin mode) this pin can work on and the 'config' configures various pad
+ settings such as pull-up, etc.
+
+ The pins are grouped into up to 9 individual pin banks which need to be
+ defined as gpio sub-nodes of the pinmux controller.
+
+properties:
+ compatible:
+ enum:
+ - rockchip,px30-pinctrl
+ - rockchip,rk2928-pinctrl
+ - rockchip,rk3066a-pinctrl
+ - rockchip,rk3066b-pinctrl
+ - rockchip,rk3128-pinctrl
+ - rockchip,rk3188-pinctrl
+ - rockchip,rk3228-pinctrl
+ - rockchip,rk3288-pinctrl
+ - rockchip,rk3308-pinctrl
+ - rockchip,rk3328-pinctrl
+ - rockchip,rk3368-pinctrl
+ - rockchip,rk3399-pinctrl
+ - rockchip,rk3568-pinctrl
+ - rockchip,rv1108-pinctrl
+
+ rockchip,grf:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ The phandle of the syscon node for the GRF registers.
+
+ rockchip,pmu:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ The phandle of the syscon node for the PMU registers,
+ as some SoCs carry parts of the iomux controller registers there.
+ Required for at least rk3188 and rk3288. On the rk3368 this should
+ point to the PMUGRF syscon.
+
+ "#address-cells":
+ enum: [1, 2]
+
+ "#size-cells":
+ enum: [1, 2]
+
+ ranges: true
+
+patternProperties:
+ "gpio[0-8]?@[0-9a-f]+$":
+ type: object
+
+ $ref: "/schemas/gpio/rockchip,gpio-bank.yaml#"
+
+ unevaluatedProperties: false
+
+ "pcfg-[a-z0-9-]+$":
+ type: object
+ properties:
+ bias-disable: true
+
+ bias-pull-down: true
+
+ bias-pull-pin-default: true
+
+ bias-pull-up: true
+
+ drive-strength:
+ minimum: 0
+ maximum: 20
+
+ input-enable: true
+
+ input-schmitt-enable: true
+
+ output-high: true
+
+ output-low: true
+
+ additionalProperties: false
+
+additionalProperties:
+ type: object
+ additionalProperties:
+ type: object
+ properties:
+ rockchip,pins:
+ type: array
+ minItems: 1
+ items:
+ items:
+ - minimum: 0
+ maximum: 8
+ - minimum: 0
+ maximum: 31
+ - minimum: 0
+ maximum: 6
+ - maximum: 0xffffffff
+ description:
+ A 3 integers array represents a group of pins mux and
+ config setting. The format is
+
+ rockchip,pins = <PIN_BANK PIN_BANK_IDX MUX &phandle>
+
+ The MUX 0 means gpio and MUX 1 to N mean the specific
+ device function. The phandle of a node contains the
+ generic pinconfig options to use, as described in
+ pinctrl-bindings.txt in this directory.
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/pinctrl/rockchip.h>
+
+ pinctrl: pinctrl {
+ compatible = "rockchip,rk3066a-pinctrl";
+ rockchip,grf = <&grf>;
+
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ gpio0: gpio@...34000 {
+ compatible = "rockchip,gpio-bank";
+ reg = <0x20034000 0x100>;
+ interrupts = <GIC_SPI 54 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_gates8 9>;
+
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ interrupt-controller;
+ #interrupt-cells = <2>;
+ };
+
+ pcfg_pull_default: pcfg-pull-default {
+ bias-pull-pin-default;
+ };
+
+ uart2 {
+ uart2_xfer: uart2-xfer {
+ rockchip,pins = <1 RK_PB0 1 &pcfg_pull_default>,
+ <1 RK_PB1 1 &pcfg_pull_default>;
+ };
+ };
+ };
+
+ uart2: serial@...64000 {
+ compatible = "snps,dw-apb-uart";
+ reg = <0x20064000 0x400>;
+ interrupts = <GIC_SPI 36 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&mux_uart2>;
+ pinctrl-0 = <&uart2_xfer>;
+ pinctrl-names = "default";
+ reg-io-width = <1>;
+ reg-shift = <2>;
+ };
--
2.20.1
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