Currently, all RZ/G2 .dtsi files configure the CANFD core clocks to 40
MHz, which limits CAN-FD data transfer rates to 4 Mbps. However, all
RZ/G2 SoCs support CANFD clock rates up to 80 MHz.
Now the R-Car CAN-FD driver has gained support for Transceiver Delay
Compensation, increase all appropriate CANFD clock rates to the
documented maximum, to support data rates up to 8 Mbps.
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
arch/arm64/boot/dts/renesas/r8a774a1.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a774b1.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a774c0.dtsi | 2 +-
arch/arm64/boot/dts/renesas/r8a774e1.dtsi | 2 +-
4 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
index c8b87aed92a368b1..6b737d91b320f483 100644
--- a/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774a1.dtsi
@@ -1186,7 +1186,7 @@ canfd: can@e66c0000 {
<&can_clk>;
clock-names = "fck", "canfd", "can_clk";
assigned-clocks = <&cpg CPG_CORE R8A774A1_CLK_CANFD>;
- assigned-clock-rates = <40000000>;
+ assigned-clock-rates = <80000000>;
power-domains = <&sysc R8A774A1_PD_ALWAYS_ON>;
resets = <&cpg 914>;
status = "disabled";
diff --git a/arch/arm64/boot/dts/renesas/r8a774b1.dtsi b/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
index f2fc2a2035a1d491..3f15d656215e15e8 100644
--- a/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774b1.dtsi
@@ -1070,7 +1070,7 @@ canfd: can@e66c0000 {
<&can_clk>;
clock-names = "fck", "canfd", "can_clk";
assigned-clocks = <&cpg CPG_CORE R8A774B1_CLK_CANFD>;
- assigned-clock-rates = <40000000>;
+ assigned-clock-rates = <80000000>;
power-domains = <&sysc R8A774B1_PD_ALWAYS_ON>;
resets = <&cpg 914>;
status = "disabled";
diff --git a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
index 530ffd29cf13da00..55df063cb32327c2 100644
--- a/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774c0.dtsi
@@ -1029,7 +1029,7 @@ canfd: can@e66c0000 {
<&can_clk>;
clock-names = "fck", "canfd", "can_clk";
assigned-clocks = <&cpg CPG_CORE R8A774C0_CLK_CANFD>;
- assigned-clock-rates = <40000000>;
+ assigned-clock-rates = <80000000>;
power-domains = <&sysc R8A774C0_PD_ALWAYS_ON>;
resets = <&cpg 914>;
status = "disabled";
diff --git a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
index e4dbda8c34d9eaef..5d730b488d46f24b 100644
--- a/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
+++ b/arch/arm64/boot/dts/renesas/r8a774e1.dtsi
@@ -1298,7 +1298,7 @@ canfd: can@e66c0000 {
<&can_clk>;
clock-names = "fck", "canfd", "can_clk";
assigned-clocks = <&cpg CPG_CORE R8A774E1_CLK_CANFD>;
- assigned-clock-rates = <40000000>;
+ assigned-clock-rates = <80000000>;
power-domains = <&sysc R8A774E1_PD_ALWAYS_ON>;
resets = <&cpg 914>;
status = "disabled";
--
2.43.0
