[PATCH 0/4] pinctrl: pinctrl-zynq: yaml conversion and minor driver updates

[PATCH 0/4] pinctrl: pinctrl-zynq: yaml conversion and minor driver updates

[Sai Krishna Potthuri]

This patch series does the following
- Covert Zynq pinctrl driver binding file to yaml.
- Update the binding for Zynq pinctrl to replace the 'io-standard' with
'power-source' parameter as recommended by Linus during ZynqMP pinctrl
driver review(https://lkml.org/lkml/2021/3/25/278).
- Update the Zynq pinctrl the driver to remove custom pin
parameter(io-standard) and instead use generic parameter(power-source).
- Update Zynq dts files to replace 'io-standard' with 'power-source'.

Reason for adding the generic parameter 'power-source' in Zynq pinctrl driver
is to maintain common pin parameter across Xilinx Zynq and ZynqMP platforms
for power supply configuration.

Sai Krishna Potthuri (4):
  dt-bindings: pinctrl: pinctrl-zynq: Convert to yaml
  dt-bindings: pinctrl-zynq: Replace 'io-standard' with 'power-source'
  pinctrl: pinctrl-zynq: Add support for 'power-source' parameter
  arm: dts: zynq: Replace 'io-standard' with 'power-source' property

 .../bindings/pinctrl/xlnx,zynq-pinctrl.txt    | 105 ---------
 .../bindings/pinctrl/xlnx,zynq-pinctrl.yaml   | 214 ++++++++++++++++++
 arch/arm/boot/dts/zynq-ebaz4205.dts           |   8 +-
 arch/arm/boot/dts/zynq-microzed.dts           |   2 +-
 arch/arm/boot/dts/zynq-zc702.dts              |  20 +-
 arch/arm/boot/dts/zynq-zc706.dts              |  18 +-
 drivers/pinctrl/pinctrl-zynq.c                |   2 +
 include/dt-bindings/pinctrl/pinctrl-zynq.h    |  17 ++
 8 files changed, 257 insertions(+), 129 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
 create mode 100644 include/dt-bindings/pinctrl/pinctrl-zynq.h

-- 
2.17.1


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[PATCH 1/4] dt-bindings: pinctrl: pinctrl-zynq: Convert to yaml

[Sai Krishna Potthuri]

Convert the Zynq pinctrl binding file to yaml.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
---
 .../bindings/pinctrl/xlnx,zynq-pinctrl.txt    | 105 ---------
 .../bindings/pinctrl/xlnx,zynq-pinctrl.yaml   | 216 ++++++++++++++++++
 2 files changed, 216 insertions(+), 105 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.txt
 create mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml

diff --git a/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.txt
deleted file mode 100644
index f488b0f77406..000000000000
--- a/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.txt
+++ /dev/null
@@ -1,105 +0,0 @@
-	Binding for Xilinx Zynq Pinctrl
-
-Required properties:
-- compatible: "xlnx,zynq-pinctrl"
-- syscon: phandle to SLCR
-- reg: Offset and length of pinctrl space in SLCR
-
-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".
-
-Zynq's 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 can include the
-mux function to select on those pin(s)/group(s), and various pin configuration
-parameters, such as pull-up, slew rate, etc.
-
-Each configuration node can consist of multiple nodes describing the pinmux and
-pinconf options. Those nodes can be pinmux nodes or pinconf nodes.
-
-The name of each subnode is not important; all subnodes should be enumerated
-and processed purely based on their content.
-
-Required properties for pinmux nodes are:
- - groups: A list of pinmux groups.
- - function: The name of a pinmux function to activate for the specified set
-   of groups.
-
-Required properties for configuration nodes:
-One of:
- - pins: a list of pin names
- - groups: A list of pinmux groups.
-
-The following generic properties as defined in pinctrl-bindings.txt are valid
-to specify in a pinmux subnode:
- groups, function
-
-The following generic properties as defined in pinctrl-bindings.txt are valid
-to specify in a pinconf subnode:
- groups, pins, bias-disable, bias-high-impedance, bias-pull-up, slew-rate,
- low-power-disable, low-power-enable
-
- Valid arguments for 'slew-rate' are '0' and '1' to select between slow and fast
- respectively.
-
- Valid values for groups are:
-   ethernet0_0_grp, ethernet1_0_grp, mdio0_0_grp, mdio1_0_grp,
-   qspi0_0_grp, qspi1_0_grp, qspi_fbclk, qspi_cs1_grp, spi0_0_grp - spi0_2_grp,
-   spi0_X_ssY (X=0..2, Y=0..2), spi1_0_grp - spi1_3_grp,
-   spi1_X_ssY (X=0..3, Y=0..2), sdio0_0_grp - sdio0_2_grp,
-   sdio1_0_grp - sdio1_3_grp, sdio0_emio_wp, sdio0_emio_cd, sdio1_emio_wp,
-   sdio1_emio_cd, smc0_nor, smc0_nor_cs1_grp, smc0_nor_addr25_grp, smc0_nand,
-   can0_0_grp - can0_10_grp, can1_0_grp - can1_11_grp, uart0_0_grp - uart0_10_grp,
-   uart1_0_grp - uart1_11_grp, i2c0_0_grp - i2c0_10_grp, i2c1_0_grp - i2c1_10_grp,
-   ttc0_0_grp - ttc0_2_grp, ttc1_0_grp - ttc1_2_grp, swdt0_0_grp - swdt0_4_grp,
-   gpio0_0_grp - gpio0_53_grp, usb0_0_grp, usb1_0_grp
-
- Valid values for pins are:
-   MIO0 - MIO53
-
- Valid values for function are:
-   ethernet0, ethernet1, mdio0, mdio1, qspi0, qspi1, qspi_fbclk, qspi_cs1,
-   spi0, spi0_ss, spi1, spi1_ss, sdio0, sdio0_pc, sdio0_cd, sdio0_wp,
-   sdio1, sdio1_pc, sdio1_cd, sdio1_wp,
-   smc0_nor, smc0_nor_cs1, smc0_nor_addr25, smc0_nand, can0, can1, uart0, uart1,
-   i2c0, i2c1, ttc0, ttc1, swdt0, gpio0, usb0, usb1
-
-The following driver-specific properties as defined here are valid to specify in
-a pin configuration subnode:
- - io-standard: Configure the pin to use the selected IO standard according to
-   this mapping:
-    1: LVCMOS18
-    2: LVCMOS25
-    3: LVCMOS33
-    4: HSTL
-
-Example:
-	pinctrl0: pinctrl@700 {
-		compatible = "xlnx,pinctrl-zynq";
-		reg = <0x700 0x200>;
-		syscon = <&slcr>;
-
-		pinctrl_uart1_default: uart1-default {
-			mux {
-				groups = "uart1_10_grp";
-				function = "uart1";
-			};
-
-			conf {
-				groups = "uart1_10_grp";
-				slew-rate = <0>;
-				io-standard = <1>;
-			};
-
-			conf-rx {
-				pins = "MIO49";
-				bias-high-impedance;
-			};
-
-			conf-tx {
-				pins = "MIO48";
-				bias-disable;
-			};
-		};
-	};
diff --git a/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
new file mode 100644
index 000000000000..2da1969e02ec
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
@@ -0,0 +1,216 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/xlnx,zynq-pinctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Zynq Pinctrl
+
+maintainers:
+  - Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
+
+description: |
+  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".
+
+  Zynq's 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 can include the
+  mux function to select on those pin(s)/group(s), and various pin configuration
+  parameters, such as pull-up, slew rate, etc.
+
+  Each configuration node can consist of multiple nodes describing the pinmux and
+  pinconf options. Those nodes can be pinmux nodes or pinconf nodes.
+
+  The name of each subnode is not important; all subnodes should be enumerated
+  and processed purely based on their content.
+
+properties:
+  compatible:
+    const: xlnx,zynq-pinctrl
+
+  reg:
+    description: Specifies the base address and size of the SLCR space.
+    maxItems: 1
+
+  syscon:
+    description:
+      phandle to the SLCR.
+
+patternProperties:
+  '^(.*-)?(default|gpio)$':
+    type: object
+    patternProperties:
+      '^mux':
+        type: object
+        description:
+          Pinctrl node's client devices use subnodes for pin muxes,
+          which in turn use below standard properties.
+        $ref: pinmux-node.yaml#
+
+        properties:
+          groups:
+            description:
+              List of groups to select (either this or "pins" must be
+              specified), available groups for this subnode.
+            items:
+              enum: [ethernet0_0_grp, ethernet1_0_grp, mdio0_0_grp,
+                     mdio1_0_grp, qspi0_0_grp, qspi1_0_grp, qspi_fbclk,
+                     qspi_cs1_grp, spi0_0_grp, spi0_1_grp, spi0_2_grp,
+                     spi0_0_ss0, spi0_0_ss1, spi0_0_ss2, spi0_1_ss0,
+                     spi0_1_ss1, spi0_1_ss2, spi0_2_ss0, spi0_2_ss1,
+                     spi0_2_ss2, spi1_0_grp, spi1_1_grp, spi1_2_grp,
+                     spi1_3_grp, spi1_0_ss0, spi1_0_ss1, spi1_0_ss2,
+                     spi1_1_ss0, spi1_1_ss1, spi1_1_ss2, spi1_2_ss0,
+                     spi1_2_ss1, spi1_2_ss2, spi1_3_ss0, spi1_3_ss1,
+                     spi1_3_ss2, sdio0_0_grp, sdio0_1_grp, sdio0_2_grp,
+                     sdio1_0_grp, sdio1_1_grp, sdio1_2_grp, sdio1_3_grp,
+                     sdio0_emio_wp, sdio0_emio_cd, sdio1_emio_wp,
+                     sdio1_emio_cd, smc0_nor, smc0_nor_cs1_grp,
+                     smc0_nor_addr25_grp, smc0_nand, can0_0_grp, can0_1_grp,
+                     can0_2_grp, can0_3_grp, can0_4_grp, can0_5_grp,
+                     can0_6_grp, can0_7_grp, can0_8_grp, can0_9_grp,
+                     can0_10_grp, can1_0_grp, can1_1_grp, can1_2_grp,
+                     can1_3_grp, can1_4_grp, can1_5_grp, can1_6_grp,
+                     can1_7_grp, can1_8_grp, can1_9_grp, can1_10_grp,
+                     can1_11_grp, uart0_0_grp, uart0_1_grp, uart0_2_grp,
+                     uart0_3_grp, uart0_4_grp, uart0_5_grp, uart0_6_grp,
+                     uart0_7_grp, uart0_8_grp, uart0_9_grp, uart0_10_grp,
+                     uart1_0_grp, uart1_1_grp, uart1_2_grp, uart1_3_grp,
+                     uart1_4_grp, uart1_5_grp, uart1_6_grp, uart1_7_grp,
+                     uart1_8_grp, uart1_9_grp, uart1_10_grp, uart1_11_grp,
+                     i2c0_0_grp, i2c0_1_grp, i2c0_2_grp, i2c0_3_grp,
+                     i2c0_4_grp, i2c0_5_grp, i2c0_6_grp, i2c0_7_grp,
+                     i2c0_8_grp, i2c0_9_grp, i2c0_10_grp, i2c1_0_grp,
+                     i2c1_1_grp, i2c1_2_grp, i2c1_3_grp, i2c1_4_grp,
+                     i2c1_5_grp, i2c1_6_grp, i2c1_7_grp, i2c1_8_grp,
+                     i2c1_9_grp, i2c1_10_grp, ttc0_0_grp, ttc0_1_grp,
+                     ttc0_2_grp, ttc1_0_grp, ttc1_1_grp, ttc1_2_grp,
+                     swdt0_0_grp, swdt0_1_grp, swdt0_2_grp, swdt0_3_grp,
+                     swdt0_4_grp, gpio0_0_grp, gpio0_1_grp, gpio0_2_grp,
+                     gpio0_3_grp, gpio0_4_grp, gpio0_5_grp, gpio0_6_grp,
+                     gpio0_7_grp, gpio0_8_grp, gpio0_9_grp, gpio0_10_grp,
+                     gpio0_11_grp, gpio0_12_grp, gpio0_13_grp, gpio0_14_grp,
+                     gpio0_15_grp, gpio0_16_grp, gpio0_17_grp, gpio0_18_grp,
+                     gpio0_19_grp, gpio0_20_grp, gpio0_21_grp, gpio0_22_grp,
+                     gpio0_23_grp, gpio0_24_grp, gpio0_25_grp, gpio0_26_grp,
+                     gpio0_27_grp, gpio0_28_grp, gpio0_29_grp, gpio0_30_grp,
+                     gpio0_31_grp, gpio0_32_grp, gpio0_33_grp, gpio0_34_grp,
+                     gpio0_35_grp, gpio0_36_grp, gpio0_37_grp, gpio0_38_grp,
+                     gpio0_39_grp, gpio0_40_grp, gpio0_41_grp, gpio0_42_grp,
+                     gpio0_43_grp, gpio0_44_grp, gpio0_45_grp, gpio0_46_grp,
+                     gpio0_47_grp, gpio0_48_grp, gpio0_49_grp, gpio0_50_grp,
+                     gpio0_51_grp, gpio0_52_grp, gpio0_53_grp, usb0_0_grp,
+                     usb1_0_grp]
+            maxItems: 54
+
+          function:
+            description:
+              Specify the alternative function to be configured for the
+              given pin groups.
+            enum: [ethernet0, ethernet1, mdio0, mdio1, qspi0, qspi1, qspi_fbclk,
+                   qspi_cs1, spi0, spi0_ss, spi1, spi1_ss, sdio0, sdio0_pc,
+                   sdio0_cd, sdio0_wp, sdio1, sdio1_pc, sdio1_cd, sdio1_wp,
+                   smc0_nor, smc0_nor_cs1, smc0_nor_addr25, smc0_nand, can0,
+                   can1, uart0, uart1, i2c0, i2c1, ttc0, ttc1, swdt0, gpio0,
+                   usb0, usb1]
+
+        required:
+          - groups
+          - function
+
+        additionalProperties: false
+
+      '^conf':
+        type: object
+        description:
+          Pinctrl node's client devices use subnodes for pin configurations,
+          which in turn use the standard properties below.
+        $ref: pincfg-node.yaml#
+
+        properties:
+          groups:
+            description:
+              List of pin groups as mentioned above.
+
+          pins:
+            description:
+              List of pin names to select in this subnode.
+            items:
+              pattern: '^MIO([0-9]|[1-4][0-9]|5[0-3])$'
+            maxItems: 54
+
+          bias-pull-up: true
+
+          bias-pull-down: true
+
+          bias-disable: true
+
+          bias-high-impedance: true
+
+          low-power-enable: true
+
+          low-power-disable: true
+
+          slew-rate:
+            enum: [0, 1]
+
+          io-standard:
+            description:
+              Selects the IO standard for MIO pins, this is driver specific.
+            $ref: "/schemas/types.yaml#/definitions/uint32"
+            enum: [1, 2, 3, 4]
+
+        oneOf:
+          - required: [ groups ]
+          - required: [ pins ]
+
+        additionalProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - syscon
+
+additionalProperties: false
+
+examples:
+  - |
+    pinctrl0: pinctrl@700 {
+       compatible = "xlnx,zynq-pinctrl";
+       reg = <0x700 0x200>;
+       syscon = <&slcr>;
+
+       pinctrl_uart1_default: uart1-default {
+           mux {
+               groups = "uart1_10_grp";
+               function = "uart1";
+           };
+
+           conf {
+               groups = "uart1_10_grp";
+               slew-rate = <0>;
+               io-standard = <1>;
+           };
+
+           conf-rx {
+               pins = "MIO49";
+               bias-high-impedance;
+           };
+
+           conf-tx {
+               pins = "MIO48";
+               bias-disable;
+           };
+       };
+    };
+
+    uart1 {
+         pinctrl-names = "default";
+         pinctrl-0 = <&pinctrl_uart1_default>;
+    };
+
+...
-- 
2.17.1


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Re: [PATCH 1/4] dt-bindings: pinctrl: pinctrl-zynq: Convert to yaml

[Rob Herring]

On Wed, 21 Jul 2021 17:22:30 +0530, Sai Krishna Potthuri wrote:
> Convert the Zynq pinctrl binding file to yaml.
> 
> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
> ---
>  .../bindings/pinctrl/xlnx,zynq-pinctrl.txt    | 105 ---------
>  .../bindings/pinctrl/xlnx,zynq-pinctrl.yaml   | 216 ++++++++++++++++++
>  2 files changed, 216 insertions(+), 105 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.txt
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>

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[PATCH 2/4] dt-bindings: pinctrl-zynq: Replace 'io-standard' with 'power-source'

[Sai Krishna Potthuri]

Replace custom pin configuration option 'io-standard' with generic property
'power-source' for Zynq pinctrl also add dt-binding file contains pin
configuration defines for Zynq pinctrl.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
---
 .../bindings/pinctrl/xlnx,zynq-pinctrl.yaml     |  8 +++-----
 include/dt-bindings/pinctrl/pinctrl-zynq.h      | 17 +++++++++++++++++
 2 files changed, 20 insertions(+), 5 deletions(-)
 create mode 100644 include/dt-bindings/pinctrl/pinctrl-zynq.h

diff --git a/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
index 2da1969e02ec..ac97dbf6998e 100644
--- a/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/xlnx,zynq-pinctrl.yaml
@@ -156,10 +156,7 @@ patternProperties:
           slew-rate:
             enum: [0, 1]
 
-          io-standard:
-            description:
-              Selects the IO standard for MIO pins, this is driver specific.
-            $ref: "/schemas/types.yaml#/definitions/uint32"
+          power-source:
             enum: [1, 2, 3, 4]
 
         oneOf:
@@ -179,6 +176,7 @@ additionalProperties: false
 
 examples:
   - |
+    #include <dt-bindings/pinctrl/pinctrl-zynq.h>
     pinctrl0: pinctrl@700 {
        compatible = "xlnx,zynq-pinctrl";
        reg = <0x700 0x200>;
@@ -193,7 +191,7 @@ examples:
            conf {
                groups = "uart1_10_grp";
                slew-rate = <0>;
-               io-standard = <1>;
+               power-source = <IO_STANDARD_LVCMOS18>;
            };
 
            conf-rx {
diff --git a/include/dt-bindings/pinctrl/pinctrl-zynq.h b/include/dt-bindings/pinctrl/pinctrl-zynq.h
new file mode 100644
index 000000000000..bbfc345f017d
--- /dev/null
+++ b/include/dt-bindings/pinctrl/pinctrl-zynq.h
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * MIO pin configuration defines for Xilinx Zynq
+ *
+ * Copyright (C) 2021 Xilinx, Inc.
+ */
+
+#ifndef _DT_BINDINGS_PINCTRL_ZYNQ_H
+#define _DT_BINDINGS_PINCTRL_ZYNQ_H
+
+/* Configuration options for different power supplies */
+#define IO_STANDARD_LVCMOS18	1
+#define IO_STANDARD_LVCMOS25	2
+#define IO_STANDARD_LVCMOS33	3
+#define IO_STANDARD_HSTL	4
+
+#endif /* _DT_BINDINGS_PINCTRL_ZYNQ_H */
-- 
2.17.1


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[PATCH 3/4] pinctrl: pinctrl-zynq: Add support for 'power-source' parameter

[Sai Krishna Potthuri]

Add support for generic pin parameter 'power-source'.
To maintain the backward compatibility, 'io-standard' parameter is still
supported in the driver.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
---
 drivers/pinctrl/pinctrl-zynq.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pinctrl/pinctrl-zynq.c b/drivers/pinctrl/pinctrl-zynq.c
index 5fb924a2eedd..a96af8a76a7a 100644
--- a/drivers/pinctrl/pinctrl-zynq.c
+++ b/drivers/pinctrl/pinctrl-zynq.c
@@ -1028,6 +1028,7 @@ static int zynq_pinconf_cfg_get(struct pinctrl_dev *pctldev,
 		break;
 	}
 	case PIN_CONFIG_IOSTANDARD:
+	case PIN_CONFIG_POWER_SOURCE:
 		arg = zynq_pinconf_iostd_get(reg);
 		break;
 	default:
@@ -1078,6 +1079,7 @@ static int zynq_pinconf_cfg_set(struct pinctrl_dev *pctldev,
 
 			break;
 		case PIN_CONFIG_IOSTANDARD:
+		case PIN_CONFIG_POWER_SOURCE:
 			if (arg <= zynq_iostd_min || arg >= zynq_iostd_max) {
 				dev_warn(pctldev->dev,
 					 "unsupported IO standard '%u'\n",
-- 
2.17.1


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[PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Sai Krishna Potthuri]

Replace 'io-standard' property with 'power-source' property in all zynq dts
files to be in sync with Zynq pinctrl driver.

Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
---
 arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
 arch/arm/boot/dts/zynq-microzed.dts |  2 +-
 arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
 arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
 4 files changed, 24 insertions(+), 24 deletions(-)

diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
index b0b836aedd76..be7eae611fb7 100644
--- a/arch/arm/boot/dts/zynq-ebaz4205.dts
+++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
@@ -57,7 +57,7 @@
 
 		conf {
 			groups = "gpio0_20_grp", "gpio0_32_grp";
-			io-standard = <3>;
+			power-source = <3>;
 			slew-rate = <0>;
 		};
 
@@ -75,7 +75,7 @@
 
 		conf {
 			groups = "sdio0_2_grp";
-			io-standard = <3>;
+			power-source = <3>;
 			slew-rate = <0>;
 			bias-disable;
 		};
@@ -87,7 +87,7 @@
 
 		conf-cd {
 			groups = "gpio0_34_grp";
-			io-standard = <3>;
+			power-source = <3>;
 			slew-rate = <0>;
 			bias-high-impedance;
 			bias-pull-up;
@@ -102,7 +102,7 @@
 
 		conf {
 			groups = "uart1_4_grp";
-			io-standard = <3>;
+			power-source = <3>;
 			slew-rate = <0>;
 		};
 
diff --git a/arch/arm/boot/dts/zynq-microzed.dts b/arch/arm/boot/dts/zynq-microzed.dts
index 6ed84fb15902..f44a4464943b 100644
--- a/arch/arm/boot/dts/zynq-microzed.dts
+++ b/arch/arm/boot/dts/zynq-microzed.dts
@@ -71,7 +71,7 @@
 		conf {
 			groups = "usb0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
diff --git a/arch/arm/boot/dts/zynq-zc702.dts b/arch/arm/boot/dts/zynq-zc702.dts
index cf70aff26c66..cf1e1cc3d132 100644
--- a/arch/arm/boot/dts/zynq-zc702.dts
+++ b/arch/arm/boot/dts/zynq-zc702.dts
@@ -206,7 +206,7 @@
 		conf {
 			groups = "can0_9_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
@@ -229,7 +229,7 @@
 		conf {
 			groups = "ethernet0_0_grp";
 			slew-rate = <0>;
-			io-standard = <4>;
+			power-source = <4>;
 		};
 
 		conf-rx {
@@ -252,7 +252,7 @@
 		conf-mdio {
 			groups = "mdio0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 			bias-disable;
 		};
 	};
@@ -270,7 +270,7 @@
 				 "gpio0_10_grp", "gpio0_11_grp", "gpio0_12_grp",
 				 "gpio0_13_grp", "gpio0_14_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-pull-up {
@@ -294,7 +294,7 @@
 			groups = "i2c0_10_grp";
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 	};
 
@@ -307,7 +307,7 @@
 		conf {
 			groups = "sdio0_2_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 			bias-disable;
 		};
 
@@ -321,7 +321,7 @@
 			bias-high-impedance;
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		mux-wp {
@@ -334,7 +334,7 @@
 			bias-high-impedance;
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 	};
 
@@ -347,7 +347,7 @@
 		conf {
 			groups = "uart1_10_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
@@ -370,7 +370,7 @@
 		conf {
 			groups = "usb0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
diff --git a/arch/arm/boot/dts/zynq-zc706.dts b/arch/arm/boot/dts/zynq-zc706.dts
index 77943c16d33f..d21e3ae4ebb2 100644
--- a/arch/arm/boot/dts/zynq-zc706.dts
+++ b/arch/arm/boot/dts/zynq-zc706.dts
@@ -150,7 +150,7 @@
 		conf {
 			groups = "ethernet0_0_grp";
 			slew-rate = <0>;
-			io-standard = <4>;
+			power-source = <4>;
 		};
 
 		conf-rx {
@@ -173,7 +173,7 @@
 		conf-mdio {
 			groups = "mdio0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 			bias-disable;
 		};
 	};
@@ -187,7 +187,7 @@
 		conf {
 			groups = "gpio0_7_grp", "gpio0_46_grp", "gpio0_47_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-pull-up {
@@ -211,7 +211,7 @@
 			groups = "i2c0_10_grp";
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 	};
 
@@ -224,7 +224,7 @@
 		conf {
 			groups = "sdio0_2_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 			bias-disable;
 		};
 
@@ -238,7 +238,7 @@
 			bias-high-impedance;
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		mux-wp {
@@ -251,7 +251,7 @@
 			bias-high-impedance;
 			bias-pull-up;
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 	};
 
@@ -264,7 +264,7 @@
 		conf {
 			groups = "uart1_10_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
@@ -287,7 +287,7 @@
 		conf {
 			groups = "usb0_0_grp";
 			slew-rate = <0>;
-			io-standard = <1>;
+			power-source = <1>;
 		};
 
 		conf-rx {
-- 
2.17.1


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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Rob Herring]

On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
> Replace 'io-standard' property with 'power-source' property in all zynq dts
> files to be in sync with Zynq pinctrl driver.
> 
> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
> ---
>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
>  4 files changed, 24 insertions(+), 24 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
> index b0b836aedd76..be7eae611fb7 100644
> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
> @@ -57,7 +57,7 @@
>  
>  		conf {
>  			groups = "gpio0_20_grp", "gpio0_32_grp";
> -			io-standard = <3>;
> +			power-source = <3>;

This will break using a new DT with a kernel without patch 3.

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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Michal Simek]

On 7/29/21 9:59 PM, Rob Herring wrote:
> On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
>> Replace 'io-standard' property with 'power-source' property in all zynq dts
>> files to be in sync with Zynq pinctrl driver.
>>
>> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
>> ---
>>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
>>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
>>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
>>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
>>  4 files changed, 24 insertions(+), 24 deletions(-)
>>
>> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
>> index b0b836aedd76..be7eae611fb7 100644
>> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
>> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
>> @@ -57,7 +57,7 @@
>>  
>>  		conf {
>>  			groups = "gpio0_20_grp", "gpio0_32_grp";
>> -			io-standard = <3>;
>> +			power-source = <3>;
> 
> This will break using a new DT with a kernel without patch 3.
> 

What do you suggest? Not to update any old DT?

Thanks,
Michal

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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Rob Herring]

On Thu, Jul 29, 2021 at 10:59 PM Michal Simek <michal.simek@xilinx.com> wrote:
>
>
>
> On 7/29/21 9:59 PM, Rob Herring wrote:
> > On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
> >> Replace 'io-standard' property with 'power-source' property in all zynq dts
> >> files to be in sync with Zynq pinctrl driver.
> >>
> >> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
> >> ---
> >>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
> >>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
> >>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
> >>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
> >>  4 files changed, 24 insertions(+), 24 deletions(-)
> >>
> >> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
> >> index b0b836aedd76..be7eae611fb7 100644
> >> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
> >> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
> >> @@ -57,7 +57,7 @@
> >>
> >>              conf {
> >>                      groups = "gpio0_20_grp", "gpio0_32_grp";
> >> -                    io-standard = <3>;
> >> +                    power-source = <3>;
> >
> > This will break using a new DT with a kernel without patch 3.
> >
>
> What do you suggest? Not to update any old DT?

Your options are don't change the dts files, patch 3 needs to go to
stable kernels, or you document the breakage (if you don't care).

Rob

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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Michal Simek]

On 8/2/21 7:29 PM, Rob Herring wrote:
> On Thu, Jul 29, 2021 at 10:59 PM Michal Simek <michal.simek@xilinx.com> wrote:
>>
>>
>>
>> On 7/29/21 9:59 PM, Rob Herring wrote:
>>> On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
>>>> Replace 'io-standard' property with 'power-source' property in all zynq dts
>>>> files to be in sync with Zynq pinctrl driver.
>>>>
>>>> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
>>>> ---
>>>>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
>>>>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
>>>>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
>>>>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
>>>>  4 files changed, 24 insertions(+), 24 deletions(-)
>>>>
>>>> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>> index b0b836aedd76..be7eae611fb7 100644
>>>> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>> @@ -57,7 +57,7 @@
>>>>
>>>>              conf {
>>>>                      groups = "gpio0_20_grp", "gpio0_32_grp";
>>>> -                    io-standard = <3>;
>>>> +                    power-source = <3>;
>>>
>>> This will break using a new DT with a kernel without patch 3.
>>>
>>
>> What do you suggest? Not to update any old DT?
> 
> Your options are don't change the dts files, patch 3 needs to go to
> stable kernels, or you document the breakage (if you don't care).

There is no intention to go to stable kernel and I don't think this is
stable material. Linus has applied 3 patches and this one should go via
my tree. It means I will make sure that this DT change will be in the
tree when pinctrl changes are applied.

Thanks,
Michal

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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Michal Simek]

Hi Rob,

On 8/5/21 9:52 AM, Michal Simek wrote:
> 
> 
> On 8/2/21 7:29 PM, Rob Herring wrote:
>> On Thu, Jul 29, 2021 at 10:59 PM Michal Simek <michal.simek@xilinx.com> wrote:
>>>
>>>
>>>
>>> On 7/29/21 9:59 PM, Rob Herring wrote:
>>>> On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
>>>>> Replace 'io-standard' property with 'power-source' property in all zynq dts
>>>>> files to be in sync with Zynq pinctrl driver.
>>>>>
>>>>> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
>>>>> ---
>>>>>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
>>>>>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
>>>>>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
>>>>>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
>>>>>  4 files changed, 24 insertions(+), 24 deletions(-)
>>>>>
>>>>> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>>> index b0b836aedd76..be7eae611fb7 100644
>>>>> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>>> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>>>> @@ -57,7 +57,7 @@
>>>>>
>>>>>              conf {
>>>>>                      groups = "gpio0_20_grp", "gpio0_32_grp";
>>>>> -                    io-standard = <3>;
>>>>> +                    power-source = <3>;
>>>>
>>>> This will break using a new DT with a kernel without patch 3.
>>>>
>>>
>>> What do you suggest? Not to update any old DT?
>>
>> Your options are don't change the dts files, patch 3 needs to go to
>> stable kernels, or you document the breakage (if you don't care).
> 
> There is no intention to go to stable kernel and I don't think this is
> stable material. Linus has applied 3 patches and this one should go via
> my tree. It means I will make sure that this DT change will be in the
> tree when pinctrl changes are applied.

Any issue with this patch? Or can I apply it to my tree?

Thanks,
Michal


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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Linus Walleij]

On Thu, Jul 29, 2021 at 9:59 PM Rob Herring <robh@kernel.org> wrote:
> On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
> > Replace 'io-standard' property with 'power-source' property in all zynq dts
> > files to be in sync with Zynq pinctrl driver.
> >
> > Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
> > ---
> >  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
> >  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
> >  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
> >  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
> >  4 files changed, 24 insertions(+), 24 deletions(-)
> >
> > diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
> > index b0b836aedd76..be7eae611fb7 100644
> > --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
> > +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
> > @@ -57,7 +57,7 @@
> >
> >               conf {
> >                       groups = "gpio0_20_grp", "gpio0_32_grp";
> > -                     io-standard = <3>;
> > +                     power-source = <3>;
>
> This will break using a new DT with a kernel without patch 3.

The old (Linux) kernel never supported the "io-standard" property
anyway.

Unless someone is running som BSD or Windows with support for
this property it can be merged by the quality of zero real-world
impacts (no-one there to hear the tree fall in the forest).

Sai Krishna: correct?

Yours,
Linus Walleij

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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Michal Simek]

On 7/30/21 2:43 PM, Linus Walleij wrote:
> On Thu, Jul 29, 2021 at 9:59 PM Rob Herring <robh@kernel.org> wrote:
>> On Wed, Jul 21, 2021 at 05:22:33PM +0530, Sai Krishna Potthuri wrote:
>>> Replace 'io-standard' property with 'power-source' property in all zynq dts
>>> files to be in sync with Zynq pinctrl driver.
>>>
>>> Signed-off-by: Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
>>> ---
>>>  arch/arm/boot/dts/zynq-ebaz4205.dts |  8 ++++----
>>>  arch/arm/boot/dts/zynq-microzed.dts |  2 +-
>>>  arch/arm/boot/dts/zynq-zc702.dts    | 20 ++++++++++----------
>>>  arch/arm/boot/dts/zynq-zc706.dts    | 18 +++++++++---------
>>>  4 files changed, 24 insertions(+), 24 deletions(-)
>>>
>>> diff --git a/arch/arm/boot/dts/zynq-ebaz4205.dts b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>> index b0b836aedd76..be7eae611fb7 100644
>>> --- a/arch/arm/boot/dts/zynq-ebaz4205.dts
>>> +++ b/arch/arm/boot/dts/zynq-ebaz4205.dts
>>> @@ -57,7 +57,7 @@
>>>
>>>               conf {
>>>                       groups = "gpio0_20_grp", "gpio0_32_grp";
>>> -                     io-standard = <3>;
>>> +                     power-source = <3>;
>>
>> This will break using a new DT with a kernel without patch 3.
> 
> The old (Linux) kernel never supported the "io-standard" property
> anyway.
> 
> Unless someone is running som BSD or Windows with support for
> this property it can be merged by the quality of zero real-world
> impacts (no-one there to hear the tree fall in the forest).
> 
> Sai Krishna: correct?

Linux Zynq pinctrl driver and in tree dts files are using io-standard
properties at least from 2015.

M


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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Linus Walleij]

On Fri, Jul 30, 2021 at 2:46 PM Michal Simek <michal.simek@xilinx.com> wrote:

> Linux Zynq pinctrl driver and in tree dts files are using io-standard
> properties at least from 2015.

Ooops my wrong.

What about supporting both the new property and io-standard as
a fallback, simply?

Yours,
Linus Walleij

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Re: [PATCH 4/4] arm: dts: zynq: Replace 'io-standard' with 'power-source' property

[Michal Simek]

po 2. 8. 2021 v 15:20 odesílatel Linus Walleij
<linus.walleij@linaro.org> napsal:
>
> On Fri, Jul 30, 2021 at 2:46 PM Michal Simek <michal.simek@xilinx.com> wrote:
>
> > Linux Zynq pinctrl driver and in tree dts files are using io-standard
> > properties at least from 2015.
>
> Ooops my wrong.
>
> What about supporting both the new property and io-standard as
> a fallback, simply?

That's exactly what I have Sai to do and PIN_CONFIG_IOSTANDARD is still there.

https://lore.kernel.org/linux-arm-kernel/1626868353-96475-1-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.com/T/#md7d304d9d8f746e51d909237b9073f2ae8930543

But IIRC I have also asked to show any warning message when io
standard property is used to convert to new property.

Thanks,
Michal


-- 
Michal Simek, Ing. (M.Eng), OpenPGP -> KeyID: FE3D1F91
w: www.monstr.eu p: +42-0-721842854
Maintainer of Linux kernel - Xilinx Microblaze
Maintainer of Linux kernel - Xilinx Zynq ARM and ZynqMP ARM64 SoCs
U-Boot custodian - Xilinx Microblaze/Zynq/ZynqMP/Versal SoCs

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Re: [PATCH 0/4] pinctrl: pinctrl-zynq: yaml conversion and minor driver updates

[Linus Walleij]

On Wed, Jul 21, 2021 at 1:54 PM Sai Krishna Potthuri
<lakshmi.sai.krishna.potthuri@xilinx.com> wrote:

> This patch series does the following
> - Covert Zynq pinctrl driver binding file to yaml.
> - Update the binding for Zynq pinctrl to replace the 'io-standard' with
> 'power-source' parameter as recommended by Linus during ZynqMP pinctrl
> driver review(https://lkml.org/lkml/2021/3/25/278).
> - Update the Zynq pinctrl the driver to remove custom pin
> parameter(io-standard) and instead use generic parameter(power-source).
> - Update Zynq dts files to replace 'io-standard' with 'power-source'.
>
> Reason for adding the generic parameter 'power-source' in Zynq pinctrl driver
> is to maintain common pin parameter across Xilinx Zynq and ZynqMP platforms
> for power supply configuration.

I applied patches 1-3 to the pinctrl tree, patch 4 should be applied
to the SoC tree.

Yours,
Linus Walleij

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