mirror of
https://github.com/Ysurac/openmptcprouter.git
synced 2025-02-15 04:42:02 +00:00
40 lines
1.3 KiB
Diff
40 lines
1.3 KiB
Diff
From b1ad4444ae92156e21972ce74eaafb82e0ac61d7 Mon Sep 17 00:00:00 2001
|
|
From: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
Date: Tue, 13 Feb 2024 15:33:37 +0000
|
|
Subject: [PATCH 0894/1002] arm: dt: bcm2712: Reduce DDC frequency to 97.5kHz
|
|
from 200kHz.
|
|
|
|
The I2C spec says the DDC link should run at 100kHz or less, however
|
|
Pi5/BCM2712 had been configured for 200kHz.
|
|
Reduce it to comply with the spec, and match Pi4.
|
|
|
|
Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
|
|
---
|
|
arch/arm/boot/dts/broadcom/bcm2712.dtsi | 4 ++--
|
|
1 file changed, 2 insertions(+), 2 deletions(-)
|
|
|
|
diff --git a/arch/arm/boot/dts/broadcom/bcm2712.dtsi b/arch/arm/boot/dts/broadcom/bcm2712.dtsi
|
|
index 09c4ee262213..12319299ea91 100644
|
|
--- a/arch/arm/boot/dts/broadcom/bcm2712.dtsi
|
|
+++ b/arch/arm/boot/dts/broadcom/bcm2712.dtsi
|
|
@@ -442,7 +442,7 @@ ddc0: i2c@7d508200 {
|
|
reg = <0x7d508200 0x58>;
|
|
interrupt-parent = <&bsc_irq>;
|
|
interrupts = <1>;
|
|
- clock-frequency = <200000>;
|
|
+ clock-frequency = <97500>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
status = "disabled";
|
|
@@ -453,7 +453,7 @@ ddc1: i2c@7d508280 {
|
|
reg = <0x7d508280 0x58>;
|
|
interrupt-parent = <&bsc_irq>;
|
|
interrupts = <2>;
|
|
- clock-frequency = <200000>;
|
|
+ clock-frequency = <97500>;
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
status = "disabled";
|
|
--
|
|
2.44.0
|
|
|