ARM: dts: atlas6: add a separate pingroup for i2s mclk output

The I2S controller can output mclk to external audio codec. But by
hardware design, some codecs need mclk and some codecs do not need
mclk. So the mclk pin can be an independent pinctrl group, and the
card driver can get it or not based on boards.

Signed-off-by: Rongjun Ying <rongjun.ying@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>

diff --git a/arch/arm/boot/dts/atlas6.dtsi b/arch/arm/boot/dts/atlas6.dtsi
index bb22842a08261a9b33474313681592de6887faab..d3de7a35825ba4bff3c5ce7082b9ecf61f155d6a 100644 (file)
--- a/arch/arm/boot/dts/atlas6.dtsi
+++ b/arch/arm/boot/dts/atlas6.dtsi
@@ -522,6 +522,12 @@
                                                 sirf,function = "sdmmc5";
                                         };
                                 };
+                               i2s_mclk_pins_a: i2s_mclk@0 {
+                                        i2s_mclk {
+                                                sirf,pins = "i2smclkgrp";
+                                                sirf,function = "i2s_mclk";
+                                        };
+                                };
                                 i2s_pins_a: i2s@0 {
                                         i2s {
                                                 sirf,pins = "i2sgrp";