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@xxxxxxxxx>
---
Untested, based on schematics.
v2:
- New.
---
arch/arm/boot/dts/r8a7794-alt.dts | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7794-alt.dts b/arch/arm/boot/dts/r8a7794-alt.dts
index 2394e4883786f13e..f376b9df1f107a47 100644
--- a/arch/arm/boot/dts/r8a7794-alt.dts
+++ b/arch/arm/boot/dts/r8a7794-alt.dts
@@ -103,6 +103,9 @@
};
&pfc {
+ pinctrl-0 = <&scif_clk_pins>;
+ pinctrl-names = "default";
+
du_pins: du {
renesas,groups = "du1_rgb666", "du1_sync", "du1_disp", "du1_dotclkout0";
renesas,function = "du";
@@ -113,6 +116,11 @@
renesas,function = "scif2";
};
+ scif_clk_pins: scif_clk {
+ renesas,groups = "scif_clk";
+ renesas,function = "scif_clk";
+ };
+
ether_pins: ether {
renesas,groups = "eth_link", "eth_mdio", "eth_rmii";
renesas,function = "eth";
@@ -197,3 +205,8 @@
status = "okay";
};
+
+&scif_clk {
+ clock-frequency = <14745600>;
+ status = "okay";
+};
--
1.9.1
--
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