ARM: dts: atlas6: Add I2S external clock input pingroup

The I2S controller can use the external clock as reference clock with
master mode. But based on different hardware or software design, this
external clock might be needed or not needed.
So the external input pin can be an independent pinctrl group, and the
card driver can decice to get it or not.

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 d3de7a35825ba4bff3c5ce7082b9ecf61f155d6a..1eb83c84d9dc203dc144a445afc9a61cdbe2e0a6 100644 (file)
--- a/arch/arm/boot/dts/atlas6.dtsi
+++ b/arch/arm/boot/dts/atlas6.dtsi
@@ -528,6 +528,12 @@
                                                 sirf,function = "i2s_mclk";
                                         };
                                 };
+                               i2s_ext_clk_input_pins_a: i2s_ext_clk_input@0 {
+                                        i2s_ext_clk_input {
+                                                sirf,pins = "i2s_ext_clk_inputgrp";
+                                                sirf,function = "i2s_ext_clk_input";
+                                        };
+                                };
                                 i2s_pins_a: i2s@0 {
                                         i2s {
                                                 sirf,pins = "i2sgrp";