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Message-Id: <1519079371-25493-1-git-send-email-david@lechnology.com>
Date: Mon, 19 Feb 2018 16:29:31 -0600
From: David Lechner <david@...hnology.com>
To: linux-arm-kernel@...ts.infradead.org
Cc: Sekhar Nori <nsekhar@...com>, Kevin Hilman <khilman@...nel.org>,
Linus Walleij <linus.walleij@...aro.org>,
Haojian Zhuang <haojian.zhuang@...aro.org>,
Tony Lindgren <tony@...mide.com>, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, David Lechner <david@...hnology.com>
Subject: [PATCH] ARM: dts: da850: use gpio-ranges
This makes use of the gpio-ranges feature that connects GPIO
controllers and PINMUX controllers.
In da850.dtsi, pinctrl-single,gpio-range is added to the pinmux node
and gpio-ranges is added to the GPIO node. Unfortunately, the way the
pinctrl-single driver enumerates the pins (starting with LSB) causes
them to be in reverse order compared to the way the gpios are assigned.
As a result, we have to declare the mapping for each GPIO individually.
This also lets us remove all of the GPIO pinmuxes from
da850-lego-ev3.dts. (Other da850 boards do not currently have any
GPIO pinmuxes declared.)
Signed-off-by: David Lechner <david@...hnology.com>
---
There are a couple of dependencies needed for this to actually work.
- "gpio: davinci: add support for pinmux gpio ranges" [1]
- "pinctrl: pinctrl-single: Fix pcs_request_gpio() when bits_per_mux != 0" [2]
[1]: https://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git/commit/?h=for-next&id=3c87d7c874b2119c1cff4eee5586b9a6bc0b7fe9
[2]: https://patchwork.kernel.org/patch/10229139/
arch/arm/boot/dts/da850-lego-ev3.dts | 81 +-----------------
arch/arm/boot/dts/da850.dtsi | 154 +++++++++++++++++++++++++++++++++++
2 files changed, 158 insertions(+), 77 deletions(-)
diff --git a/arch/arm/boot/dts/da850-lego-ev3.dts b/arch/arm/boot/dts/da850-lego-ev3.dts
index fa21add..401d808 100644
--- a/arch/arm/boot/dts/da850-lego-ev3.dts
+++ b/arch/arm/boot/dts/da850-lego-ev3.dts
@@ -37,7 +37,7 @@
#size-cells = <0>;
label = "EV3 Brick Buttons";
pinctrl-names = "default";
- pinctrl-0 = <&button_pins>, <&button_bias>;
+ pinctrl-0 = <&button_bias>;
center {
label = "Center";
@@ -81,8 +81,6 @@
*/
leds {
compatible = "gpio-leds";
- pinctrl-names = "default";
- pinctrl-0 = <&led_pins>;
left_green {
label = "led0:green:brick-status";
@@ -119,8 +117,6 @@
gpio-poweroff {
compatible = "gpio-poweroff";
gpios = <&gpio 107 GPIO_ACTIVE_LOW>;
- pinctrl-names = "default";
- pinctrl-0 = <&system_power_pin>;
};
sound {
@@ -145,8 +141,6 @@
* the sensor (input) ports, the motor (output) ports and the A/DC.
*/
vcc5v: regulator1 {
- pinctrl-names = "default";
- pinctrl-0 = <&vcc5v_pins>;
compatible = "regulator-fixed";
regulator-name = "vcc5v";
regulator-min-microvolt = <5000000>;
@@ -174,8 +168,6 @@
* This is the amplifier for the speaker.
*/
amp: regulator3 {
- pinctrl-names = "default";
- pinctrl-0 = <&_pins>;
compatible = "regulator-fixed";
regulator-name = "amp";
gpio = <&gpio 111 GPIO_ACTIVE_HIGH>;
@@ -186,8 +178,6 @@
* The EV3 can use 6-AA batteries or a rechargeable Li-ion battery pack.
*/
battery {
- pinctrl-names = "default";
- pinctrl-0 = <&battery_pins>;
compatible = "lego,ev3-battery";
io-channels = <&adc 4>, <&adc 3>;
io-channel-names = "voltage", "current";
@@ -223,73 +213,10 @@
&pmx_core {
status = "okay";
- mmc0_cd_pin: pinmux_mmc0_cd {
- pinctrl-single,bits = <
- /* GP5[14] */
- 0x2C 0x00000080 0x000000f0
- >;
- };
-
- button_pins: pinmux_button_pins {
- pinctrl-single,bits = <
- /* GP1[13] */
- 0x8 0x00000800 0x00000f00
- /* GP6[10] */
- 0x34 0x00800000 0x00f00000
- /* GP6[6] */
- 0x38 0x00000080 0x000000f0
- /* GP7[12], GP7[14], GP7[15] */
- 0x40 0x00808800 0x00f0ff00
- >;
- };
-
- led_pins: pinmux_led_pins {
- pinctrl-single,bits = <
- /* GP6[12], GP6[13], GP6[14] */
- 0x34 0x00008880 0x0000fff0
- /* GP6[7] */
- 0x38 0x00000008 0x0000000f
- >;
- };
-
- system_power_pin: pinmux_system_power {
- pinctrl-single,bits = <
- /* GP6[11] */
- 0x34 0x00080000 0x000f0000
- >;
- };
-
- vcc5v_pins: pinmux_vcc5v {
- pinctrl-single,bits = <
- /* GP6[5] */
- 0x40 0x00000080 0x000000f0
- /* GP6[3] */
- 0x4c 0x00008000 0x0000f000
- >;
- };
-
- amp_pins: pinmux_amp_pins {
- pinctrl-single,bits = <
- /* GP6[15] */
- 0x34 0x00000008 0x0000000f
- >;
- };
-
- battery_pins: pinmux_battery_pins {
- pinctrl-single,bits = <
- /* GP0[6] */
- 0x04 0x00000080 0x000000f0
- /* GP8[8] */
- 0x4c 0x00000080 0x000000f0
- >;
- };
-
ev3_lcd_pins: pinmux_lcd {
pinctrl-single,bits = <
- /* SIMO, GP2[11], GP2[12], CLK */
- 0x14 0x00188100 0x00ffff00
- /* GP5[0] */
- 0x30 0x80000000 0xf0000000
+ /* SIMO, CLK */
+ 0x14 0x00100100 0x00f00f00
>;
};
};
@@ -344,7 +271,7 @@
bus-width = <4>;
cd-gpios = <&gpio 94 GPIO_ACTIVE_LOW>;
pinctrl-names = "default";
- pinctrl-0 = <&mmc0_pins>, <&mmc0_cd_pin>;
+ pinctrl-0 = <&mmc0_pins>;
};
&spi0 {
diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 4bc6eb8..a6a4c75 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -160,8 +160,18 @@
pinctrl-single,bit-per-mux;
pinctrl-single,register-width = <32>;
pinctrl-single,function-mask = <0xf>;
+ /* pin base, nr pins & gpio function */
+ pinctrl-single,gpio-range = <&range 0 17 0x8>,
+ <&range 17 8 0x4>,
+ <&range 26 8 0x4>,
+ <&range 34 80 0x8>,
+ <&range 129 31 0x8>;
status = "disabled";
+ range: gpio-range {
+ #pinctrl-single,gpio-range-cells = <3>;
+ };
+
serial0_rtscts_pins: pinmux_serial0_rtscts_pins {
pinctrl-single,bits = <
/* UART0_RTS UART0_CTS */
@@ -739,6 +749,150 @@
#interrupt-cells = <2>;
clocks = <&psc1 3>;
clock-names = "gpio";
+ gpio-ranges = <&pmx_core 0 15 1>,
+ <&pmx_core 1 14 1>,
+ <&pmx_core 2 13 1>,
+ <&pmx_core 3 12 1>,
+ <&pmx_core 4 11 1>,
+ <&pmx_core 5 10 1>,
+ <&pmx_core 6 9 1>,
+ <&pmx_core 7 8 1>,
+ <&pmx_core 8 7 1>,
+ <&pmx_core 9 6 1>,
+ <&pmx_core 10 5 1>,
+ <&pmx_core 11 4 1>,
+ <&pmx_core 12 3 1>,
+ <&pmx_core 13 2 1>,
+ <&pmx_core 14 1 1>,
+ <&pmx_core 15 0 1>,
+ <&pmx_core 16 39 1>,
+ <&pmx_core 17 38 1>,
+ <&pmx_core 18 37 1>,
+ <&pmx_core 19 36 1>,
+ <&pmx_core 20 35 1>,
+ <&pmx_core 21 34 1>,
+ <&pmx_core 22 33 1>,
+ <&pmx_core 23 32 1>,
+ <&pmx_core 24 24 1>,
+ <&pmx_core 25 22 1>,
+ <&pmx_core 26 21 1>,
+ <&pmx_core 27 20 1>,
+ <&pmx_core 28 19 1>,
+ <&pmx_core 29 18 1>,
+ <&pmx_core 30 17 1>,
+ <&pmx_core 31 16 1>,
+ <&pmx_core 32 55 1>,
+ <&pmx_core 33 54 1>,
+ <&pmx_core 34 53 1>,
+ <&pmx_core 35 52 1>,
+ <&pmx_core 36 51 1>,
+ <&pmx_core 37 50 1>,
+ <&pmx_core 38 49 1>,
+ <&pmx_core 39 48 1>,
+ <&pmx_core 40 47 1>,
+ <&pmx_core 41 46 1>,
+ <&pmx_core 42 45 1>,
+ <&pmx_core 43 44 1>,
+ <&pmx_core 44 43 1>,
+ <&pmx_core 45 42 1>,
+ <&pmx_core 46 41 1>,
+ <&pmx_core 47 40 1>,
+ <&pmx_core 48 71 1>,
+ <&pmx_core 49 70 1>,
+ <&pmx_core 50 69 1>,
+ <&pmx_core 51 68 1>,
+ <&pmx_core 52 67 1>,
+ <&pmx_core 53 66 1>,
+ <&pmx_core 54 65 1>,
+ <&pmx_core 55 64 1>,
+ <&pmx_core 56 63 1>,
+ <&pmx_core 57 62 1>,
+ <&pmx_core 58 61 1>,
+ <&pmx_core 59 60 1>,
+ <&pmx_core 60 59 1>,
+ <&pmx_core 61 58 1>,
+ <&pmx_core 62 57 1>,
+ <&pmx_core 63 56 1>,
+ <&pmx_core 64 87 1>,
+ <&pmx_core 65 86 1>,
+ <&pmx_core 66 85 1>,
+ <&pmx_core 67 84 1>,
+ <&pmx_core 68 83 1>,
+ <&pmx_core 69 82 1>,
+ <&pmx_core 70 81 1>,
+ <&pmx_core 71 80 1>,
+ <&pmx_core 72 70 1>,
+ <&pmx_core 73 78 1>,
+ <&pmx_core 74 77 1>,
+ <&pmx_core 75 76 1>,
+ <&pmx_core 76 75 1>,
+ <&pmx_core 77 74 1>,
+ <&pmx_core 78 73 1>,
+ <&pmx_core 79 72 1>,
+ <&pmx_core 80 103 1>,
+ <&pmx_core 81 102 1>,
+ <&pmx_core 82 101 1>,
+ <&pmx_core 83 100 1>,
+ <&pmx_core 84 99 1>,
+ <&pmx_core 85 98 1>,
+ <&pmx_core 86 97 1>,
+ <&pmx_core 87 96 1>,
+ <&pmx_core 88 95 1>,
+ <&pmx_core 89 94 1>,
+ <&pmx_core 90 93 1>,
+ <&pmx_core 91 92 1>,
+ <&pmx_core 92 91 1>,
+ <&pmx_core 93 90 1>,
+ <&pmx_core 94 89 1>,
+ <&pmx_core 95 88 1>,
+ <&pmx_core 96 158 1>,
+ <&pmx_core 97 157 1>,
+ <&pmx_core 98 156 1>,
+ <&pmx_core 99 155 1>,
+ <&pmx_core 100 154 1>,
+ <&pmx_core 101 129 1>,
+ <&pmx_core 102 113 1>,
+ <&pmx_core 103 112 1>,
+ <&pmx_core 104 111 1>,
+ <&pmx_core 105 110 1>,
+ <&pmx_core 106 109 1>,
+ <&pmx_core 107 108 1>,
+ <&pmx_core 108 107 1>,
+ <&pmx_core 109 106 1>,
+ <&pmx_core 110 105 1>,
+ <&pmx_core 111 104 1>,
+ <&pmx_core 112 145 1>,
+ <&pmx_core 113 144 1>,
+ <&pmx_core 114 143 1>,
+ <&pmx_core 115 142 1>,
+ <&pmx_core 116 141 1>,
+ <&pmx_core 117 140 1>,
+ <&pmx_core 118 139 1>,
+ <&pmx_core 119 138 1>,
+ <&pmx_core 120 137 1>,
+ <&pmx_core 121 136 1>,
+ <&pmx_core 122 135 1>,
+ <&pmx_core 123 134 1>,
+ <&pmx_core 124 133 1>,
+ <&pmx_core 125 132 1>,
+ <&pmx_core 126 131 1>,
+ <&pmx_core 127 130 1>,
+ <&pmx_core 128 159 1>,
+ <&pmx_core 129 31 1>,
+ <&pmx_core 130 30 1>,
+ <&pmx_core 131 20 1>,
+ <&pmx_core 132 28 1>,
+ <&pmx_core 133 27 1>,
+ <&pmx_core 134 26 1>,
+ <&pmx_core 135 23 1>,
+ <&pmx_core 136 153 1>,
+ <&pmx_core 137 152 1>,
+ <&pmx_core 138 151 1>,
+ <&pmx_core 139 150 1>,
+ <&pmx_core 140 149 1>,
+ <&pmx_core 141 148 1>,
+ <&pmx_core 142 147 1>,
+ <&pmx_core 143 146 1>;
};
psc1: clock-controller@...000 {
compatible = "ti,da850-psc1";
--
2.7.4
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