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authorShawn Guo <shawn.guo@linaro.org>2013-02-20 06:32:52 +0400
committerShawn Guo <shawn.guo@linaro.org>2013-04-09 18:52:50 +0400
commite16415313c9b00b1adc313e85c2c8a81febe0b98 (patch)
treeb1e804b1bb647f3984036d9f9befbe53023bc519 /arch/arm/boot/dts/imx6q-sabresd.dts
parent36dffd8f49bc1364998db81bee739ea4574d88f7 (diff)
downloadlinux-e16415313c9b00b1adc313e85c2c8a81febe0b98.tar.xz
pinctrl: imx: move hard-coding data into device tree
Currently, all imx pinctrl drivers maintain a big array of struct imx_pin_reg which hard-codes data like register offset and mux mode setting for each pin function. Every time a new imx SoC support is added, we need to add such a big mount of data. With moving to single kernel build, it's only matter of time to be blamed on memory consuming. With DTC pre-processor support in place, the patch moves all these data into device tree by redefining the PIN_FUNC_ID in imxXX-pinfunc.h and changing the PIN_FUNC_ID parsing code a little bit. The pin id gets re-numbered based on mux register offset, or config register offset if the pin has no mux register, so that kernel can identify the pin id from register offsets provided by device tree. As a bonus point of the change, those arbitrary magic numbers standing for particular PIN_FUNC_ID in device tree sources are now replaced by macros to improve the readability of dts files. Signed-off-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Dong Aisheng <dong.aisheng@linaro.org> Acked-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/imx6q-sabresd.dts')
-rw-r--r--arch/arm/boot/dts/imx6q-sabresd.dts12
1 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/boot/dts/imx6q-sabresd.dts b/arch/arm/boot/dts/imx6q-sabresd.dts
index 6c06912fd8e2..9b96885f9bc9 100644
--- a/arch/arm/boot/dts/imx6q-sabresd.dts
+++ b/arch/arm/boot/dts/imx6q-sabresd.dts
@@ -64,12 +64,12 @@
hog {
pinctrl_hog: hoggrp {
fsl,pins = <
- 1004 0x80000000 /* MX6Q_PAD_GPIO_4__GPIO_1_4 */
- 1012 0x80000000 /* MX6Q_PAD_GPIO_5__GPIO_1_5 */
- 1402 0x80000000 /* MX6Q_PAD_NANDF_D0__GPIO_2_0 */
- 1410 0x80000000 /* MX6Q_PAD_NANDF_D1__GPIO_2_1 */
- 1418 0x80000000 /* MX6Q_PAD_NANDF_D2__GPIO_2_2 */
- 1426 0x80000000 /* MX6Q_PAD_NANDF_D3__GPIO_2_3 */
+ MX6Q_PAD_GPIO_4__GPIO1_IO04 0x80000000
+ MX6Q_PAD_GPIO_5__GPIO1_IO05 0x80000000
+ MX6Q_PAD_NANDF_D0__GPIO2_IO00 0x80000000
+ MX6Q_PAD_NANDF_D1__GPIO2_IO01 0x80000000
+ MX6Q_PAD_NANDF_D2__GPIO2_IO02 0x80000000
+ MX6Q_PAD_NANDF_D3__GPIO2_IO03 0x80000000
>;
};
};