ARM: dts: imx51: make pinctrl nodes board specific
Currently, all pinctrl setting nodes are defined in <soc>.dtsi, so that
boards that share the same pinctrl setting do not have to define it time
and time again in <board>.dts. However, along with the devices and use
cases being added continuously, the pinctrl setting nodes under iomuxc
becomes more than expected. This bloats device tree blob for particular
board unnecessarily since only a small subset of those pinctrl setting
nodes will be used by the board. It impacts not only the DTB file size
but also the run-time device tree lookup efficiency.
The patch moves all the pinctrl data into individual boards as needed.
With the changes, the pinctrl setting nodes becomes local to particular
board, and it makes no sense to continue numbering the setting for
given peripheral. Thus, all the pinctrl phandler name gets updated to
have only peripheral name in there.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
diff --git a/arch/arm/boot/dts/imx51-apf51.dts b/arch/arm/boot/dts/imx51-apf51.dts
index b360699..58ccf44 100644
--- a/arch/arm/boot/dts/imx51-apf51.dts
+++ b/arch/arm/boot/dts/imx51-apf51.dts
@@ -34,13 +34,47 @@
&fec {
pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_fec_2>;
+ pinctrl-0 = <&pinctrl_fec>;
phy-mode = "mii";
phy-reset-gpios = <&gpio3 0 0>;
phy-reset-duration = <1>;
status = "okay";
};
+&iomuxc {
+ imx51-apf51 {
+ pinctrl_fec: fecgrp {
+ fsl,pins = <
+ MX51_PAD_DI_GP3__FEC_TX_ER 0x80000000
+ MX51_PAD_DI2_PIN4__FEC_CRS 0x80000000
+ MX51_PAD_DI2_PIN2__FEC_MDC 0x80000000
+ MX51_PAD_DI2_PIN3__FEC_MDIO 0x80000000
+ MX51_PAD_DI2_DISP_CLK__FEC_RDATA1 0x80000000
+ MX51_PAD_DI_GP4__FEC_RDATA2 0x80000000
+ MX51_PAD_DISP2_DAT0__FEC_RDATA3 0x80000000
+ MX51_PAD_DISP2_DAT1__FEC_RX_ER 0x80000000
+ MX51_PAD_DISP2_DAT6__FEC_TDATA1 0x80000000
+ MX51_PAD_DISP2_DAT7__FEC_TDATA2 0x80000000
+ MX51_PAD_DISP2_DAT8__FEC_TDATA3 0x80000000
+ MX51_PAD_DISP2_DAT9__FEC_TX_EN 0x80000000
+ MX51_PAD_DISP2_DAT10__FEC_COL 0x80000000
+ MX51_PAD_DISP2_DAT11__FEC_RX_CLK 0x80000000
+ MX51_PAD_DISP2_DAT12__FEC_RX_DV 0x80000000
+ MX51_PAD_DISP2_DAT13__FEC_TX_CLK 0x80000000
+ MX51_PAD_DISP2_DAT14__FEC_RDATA0 0x80000000
+ MX51_PAD_DISP2_DAT15__FEC_TDATA0 0x80000000
+ >;
+ };
+
+ pinctrl_uart3: uart3grp {
+ fsl,pins = <
+ MX51_PAD_UART3_RXD__UART3_RXD 0x1c5
+ MX51_PAD_UART3_TXD__UART3_TXD 0x1c5
+ >;
+ };
+ };
+};
+
&nfc {
nand-bus-width = <8>;
nand-ecc-mode = "hw";
@@ -50,6 +84,6 @@
&uart3 {
pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_uart3_2>;
+ pinctrl-0 = <&pinctrl_uart3>;
status = "okay";
};