[PATCH 1/2] ARM: dts: at91: sama5d3: fix maximum peripheral clock rates

From: Alexandre Belloni
Date: Fri Jan 10 2020 - 12:20:20 EST


Currently the maximum rate for peripheral clock is calculated based on a
typical 133MHz MCK. The maximum frequency is defined in the datasheet as a
ratio to MCK. Some sama5d3 platforms are using a 166MHz MCK. Update the
device trees to match the maximum rate based on 166MHz.

Reported-by: Karl RudbÃk Olsen <karl@xxxxxxxxxxxxxxxxx>
Fixes: d2e8190b7916 ("ARM: at91/dt: define sama5d3 clocks")
Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
---
arch/arm/boot/dts/sama5d3.dtsi | 28 ++++++++++++++--------------
arch/arm/boot/dts/sama5d3_can.dtsi | 4 ++--
arch/arm/boot/dts/sama5d3_uart.dtsi | 4 ++--
3 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/arch/arm/boot/dts/sama5d3.dtsi b/arch/arm/boot/dts/sama5d3.dtsi
index f770aace0efd..203d40be70a5 100644
--- a/arch/arm/boot/dts/sama5d3.dtsi
+++ b/arch/arm/boot/dts/sama5d3.dtsi
@@ -1188,49 +1188,49 @@ pioE_clk: pioE_clk {
usart0_clk: usart0_clk {
#clock-cells = <0>;
reg = <12>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

usart1_clk: usart1_clk {
#clock-cells = <0>;
reg = <13>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

usart2_clk: usart2_clk {
#clock-cells = <0>;
reg = <14>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

usart3_clk: usart3_clk {
#clock-cells = <0>;
reg = <15>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

uart0_clk: uart0_clk {
#clock-cells = <0>;
reg = <16>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

twi0_clk: twi0_clk {
reg = <18>;
#clock-cells = <0>;
- atmel,clk-output-range = <0 16625000>;
+ atmel,clk-output-range = <0 41500000>;
};

twi1_clk: twi1_clk {
#clock-cells = <0>;
reg = <19>;
- atmel,clk-output-range = <0 16625000>;
+ atmel,clk-output-range = <0 41500000>;
};

twi2_clk: twi2_clk {
#clock-cells = <0>;
reg = <20>;
- atmel,clk-output-range = <0 16625000>;
+ atmel,clk-output-range = <0 41500000>;
};

mci0_clk: mci0_clk {
@@ -1246,19 +1246,19 @@ mci1_clk: mci1_clk {
spi0_clk: spi0_clk {
#clock-cells = <0>;
reg = <24>;
- atmel,clk-output-range = <0 133000000>;
+ atmel,clk-output-range = <0 166000000>;
};

spi1_clk: spi1_clk {
#clock-cells = <0>;
reg = <25>;
- atmel,clk-output-range = <0 133000000>;
+ atmel,clk-output-range = <0 166000000>;
};

tcb0_clk: tcb0_clk {
#clock-cells = <0>;
reg = <26>;
- atmel,clk-output-range = <0 133000000>;
+ atmel,clk-output-range = <0 166000000>;
};

pwm_clk: pwm_clk {
@@ -1269,7 +1269,7 @@ pwm_clk: pwm_clk {
adc_clk: adc_clk {
#clock-cells = <0>;
reg = <29>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

dma0_clk: dma0_clk {
@@ -1300,13 +1300,13 @@ isi_clk: isi_clk {
ssc0_clk: ssc0_clk {
#clock-cells = <0>;
reg = <38>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

ssc1_clk: ssc1_clk {
#clock-cells = <0>;
reg = <39>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

sha_clk: sha_clk {
diff --git a/arch/arm/boot/dts/sama5d3_can.dtsi b/arch/arm/boot/dts/sama5d3_can.dtsi
index cf06a018ed0f..2470dd3fff25 100644
--- a/arch/arm/boot/dts/sama5d3_can.dtsi
+++ b/arch/arm/boot/dts/sama5d3_can.dtsi
@@ -36,13 +36,13 @@ periphck {
can0_clk: can0_clk {
#clock-cells = <0>;
reg = <40>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

can1_clk: can1_clk {
#clock-cells = <0>;
reg = <41>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};
};
};
diff --git a/arch/arm/boot/dts/sama5d3_uart.dtsi b/arch/arm/boot/dts/sama5d3_uart.dtsi
index 4316bdbdc25d..cb62adbd28ed 100644
--- a/arch/arm/boot/dts/sama5d3_uart.dtsi
+++ b/arch/arm/boot/dts/sama5d3_uart.dtsi
@@ -41,13 +41,13 @@ periphck {
uart0_clk: uart0_clk {
#clock-cells = <0>;
reg = <16>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};

uart1_clk: uart1_clk {
#clock-cells = <0>;
reg = <17>;
- atmel,clk-output-range = <0 66000000>;
+ atmel,clk-output-range = <0 83000000>;
};
};
};
--
2.24.1