From: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
[ Upstream commit a5101ef18b4d0751588f61d939694bad183cc240 ]
As serial communication requires a clean clock signal, the High Speed
Serial Communication Interfaces with FIFO (HSCIF) are clocked by a clock
that is not affected by Spread Spectrum or Fractional Multiplication.
Hence change the clock input for the HSCIF Baud Rate Generator internal
clock from the S0D3_PER clock to the SASYNCPERD1 clock (which has the
same clock rate), cfr. R-Car S4-8 Hardware User's Manual rev. 0.81.
Fixes: 01a787f78bfd ("arm64: dts: renesas: r8a779f0: Add HSCIF nodes")
Reported-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20221103143440.46449-4-wsa+renesas@xxxxxxxxxxxxxxxxxxxx
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm64/boot/dts/renesas/r8a779f0.dtsi | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
index c2f152bcf10e..3be577dc9a93 100644
--- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi
@@ -577,7 +577,7 @@ hscif0: serial@e6540000 {
reg = <0 0xe6540000 0 0x60>;
interrupts = <GIC_SPI 245 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 514>,
- <&cpg CPG_CORE R8A779F0_CLK_S0D3>,
+ <&cpg CPG_CORE R8A779F0_CLK_SASYNCPERD1>,
<&scif_clk>;
clock-names = "fck", "brg_int", "scif_clk";
dmas = <&dmac0 0x31>, <&dmac0 0x30>,
@@ -594,7 +594,7 @@ hscif1: serial@e6550000 {
reg = <0 0xe6550000 0 0x60>;
interrupts = <GIC_SPI 246 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 515>,
- <&cpg CPG_CORE R8A779F0_CLK_S0D3>,
+ <&cpg CPG_CORE R8A779F0_CLK_SASYNCPERD1>,
<&scif_clk>;
clock-names = "fck", "brg_int", "scif_clk";
dmas = <&dmac0 0x33>, <&dmac0 0x32>,
@@ -611,7 +611,7 @@ hscif2: serial@e6560000 {
reg = <0 0xe6560000 0 0x60>;
interrupts = <GIC_SPI 247 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 516>,
- <&cpg CPG_CORE R8A779F0_CLK_S0D3>,
+ <&cpg CPG_CORE R8A779F0_CLK_SASYNCPERD1>,
<&scif_clk>;
clock-names = "fck", "brg_int", "scif_clk";
dmas = <&dmac0 0x35>, <&dmac0 0x34>,
@@ -628,7 +628,7 @@ hscif3: serial@e66a0000 {
reg = <0 0xe66a0000 0 0x60>;
interrupts = <GIC_SPI 248 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&cpg CPG_MOD 517>,
- <&cpg CPG_CORE R8A779F0_CLK_S0D3>,
+ <&cpg CPG_CORE R8A779F0_CLK_SASYNCPERD1>,
<&scif_clk>;
clock-names = "fck", "brg_int", "scif_clk";
dmas = <&dmac0 0x37>, <&dmac0 0x36>,
--
2.35.1
