diff options
| author | Shawn Guo <shawn.guo@linaro.org> | 2013-02-20 10:32:52 +0800 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-04-09 22:52:50 +0800 |
| commit | e16415313c9b00b1adc313e85c2c8a81febe0b98 (patch) | |
| tree | b1e804b1bb647f3984036d9f9befbe53023bc519 /arch/arm/boot/dts/imx6q-sabresd.dts | |
| parent | 36dffd8f49bc1364998db81bee739ea4574d88f7 (diff) | |
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.dts | 12 |
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 >; }; }; |