[PATCH v4 6/8] ARM: bcm2835: Use the RPi firmware clocks for uart.
From: Eric Anholt <hidden>
Date: 2015-07-20 19:34:10
Also in:
linux-clk, lkml
Subsystem:
the rest · Maintainer:
Linus Torvalds
This gets us a correct apb_pclk, which previously was accidentally using the "20201000.uart" clock from clk-bcm2835.c, due to the fallback clk_get_sys() path. Signed-off-by: Eric Anholt <redacted> Acked-by: Stephen Warren <redacted> --- arch/arm/boot/dts/bcm2835-rpi.dtsi | 7 +++++++ arch/arm/boot/dts/bcm2835.dtsi | 2 +- 2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/arch/arm/boot/dts/bcm2835-rpi.dtsi b/arch/arm/boot/dts/bcm2835-rpi.dtsi
index 7cc47fb..9549eb8 100644
--- a/arch/arm/boot/dts/bcm2835-rpi.dtsi
+++ b/arch/arm/boot/dts/bcm2835-rpi.dtsi@@ -1,3 +1,4 @@ +#include <dt-bindings/clk/raspberrypi.h> #include "bcm2835.dtsi" / {
@@ -62,3 +63,9 @@ status = "okay"; bus-width = <4>; }; + +&uart0 { + clocks = <&firmware_clocks RPI_CLOCK_UART0>, + <&firmware_clocks RPI_CLOCK_CORE>; + clock-names = "uartclk", "apb_pclk"; +};
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index 32f5830..5be2862 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi@@ -92,7 +92,7 @@ #interrupt-cells = <2>; }; - uart at 7e201000 { + uart0: uart at 7e201000 { compatible = "brcm,bcm2835-pl011", "arm,pl011", "arm,primecell"; reg = <0x7e201000 0x1000>; interrupts = <2 25>;
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2.1.4