From: Wolfram Sang wsa+renesas@sang-engineering.com
[ 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@glider.be Signed-off-by: Wolfram Sang wsa+renesas@sang-engineering.com Link: https://lore.kernel.org/r/20221103143440.46449-4-wsa+renesas@sang-engineerin... Signed-off-by: Geert Uytterhoeven geert+renesas@glider.be Signed-off-by: Sasha Levin sashal@kernel.org --- 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 384817ffa4de..6ee5f0a54b13 100644 --- a/arch/arm64/boot/dts/renesas/r8a779f0.dtsi +++ b/arch/arm64/boot/dts/renesas/r8a779f0.dtsi @@ -442,7 +442,7 @@ 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>, @@ -459,7 +459,7 @@ 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>, @@ -476,7 +476,7 @@ 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>, @@ -493,7 +493,7 @@ 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>,