ARM: dts: marzen: Enable SCIF_CLK frequency and pins

Add and enable the external crystal for the SCIF_CLK and its pinctrl, to
be used by the Baud Rate Generator for External Clock (BRG) on (H)SCIF.

This increases the range and accuracy of supported baud rates.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

diff --git a/arch/arm/boot/dts/r8a7779-marzen.dts b/arch/arm/boot/dts/r8a7779-marzen.dts
index fe396c8..e111d35 100644 (file)
--- a/arch/arm/boot/dts/r8a7779-marzen.dts
+++ b/arch/arm/boot/dts/r8a7779-marzen.dts
@@ -165,6 +165,9 @@
 };
 
 &pfc {
+       pinctrl-0 = <&scif_clk_pins>;
+       pinctrl-names = "default";
+
        du_pins: du {
                du0 {
                        renesas,groups = "du0_rgb888", "du0_sync_1", "du0_clk_out_0";
@@ -176,6 +179,11 @@
                };
        };
 
+       scif_clk_pins: scif_clk {
+               renesas,groups = "scif_clk_b";
+               renesas,function = "scif_clk";
+       };
+
        ethernet_pins: ethernet {
                intc {
                        renesas,groups = "intc_irq1_b";
@@ -222,6 +230,11 @@
        status = "okay";
 };
 
+&scif_clk {
+       clock-frequency = <14745600>;
+       status = "okay";
+};
+
 &sdhi0 {
        pinctrl-0 = <&sdhi0_pins>;
        pinctrl-names = "default";