ARM: dts: koelsch: Enable SCIF_CLK frequency and pins
authorGeert Uytterhoeven <geert+renesas@glider.be>
Fri, 29 Jan 2016 10:17:21 +0000 (11:17 +0100)
committerSimon Horman <horms+renesas@verge.net.au>
Tue, 9 Feb 2016 18:43:26 +0000 (19:43 +0100)
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:
  - SCIF:
      - Supports now 50, 75, 110, 115200015000002000000, and
        4000000 bps,
      - Perfect match for standard 50-460800, and 9216000 bps.
      - More accurate 576000 bps.
  - HSCIF:
      - Supports now 50, 75, 110, 134, 150, and 200 bps,
      - Perfect match for standard 50-460800, and 9216000 bps.
      - More accurate 576000, 115200030000003500000, and 4000000
bps.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
arch/arm/boot/dts/r8a7791-koelsch.dts

index 45256f3cc83560a80fa91b6313b46e0bed4f5a23..0ad71b81d3a25f59aeaa3e329de0ac9f55c0cdad 100644 (file)
 };
 
 &pfc {
+       pinctrl-0 = <&scif_clk_pins>;
+       pinctrl-names = "default";
+
        i2c2_pins: i2c2 {
                renesas,groups = "i2c2";
                renesas,function = "i2c2";
                renesas,function = "scif1";
        };
 
+       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";
        status = "okay";
 };
 
+&scif_clk {
+       clock-frequency = <14745600>;
+       status = "okay";
+};
+
 &sdhi0 {
        pinctrl-0 = <&sdhi0_pins>;
        pinctrl-names = "default";