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domenico
2025-06-24 14:35:53 +02:00
commit c06fb25d1f
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78
target/linux/bcm27xx/patches-6.6/950-0865-ARM-dts-rp1-Add-I2C-timings.patch Normal file
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@@ -0,0 +1,78 @@
From c696ba4aacc39492ce09279c71135663d899a298 Mon Sep 17 00:00:00 2001
From: Phil Elwell <phil@raspberrypi.com>
Date: Tue, 16 Jan 2024 16:05:18 +0000
Subject: [PATCH 0865/1085] ARM: dts: rp1: Add I2C timings
Add SCL rise and fall times, to allow the derivation of timings at
arbitrary speeds.
Signed-off-by: Phil Elwell <phil@raspberrypi.com>
---
arch/arm/boot/dts/broadcom/rp1.dtsi | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/arch/arm/boot/dts/broadcom/rp1.dtsi
+++ b/arch/arm/boot/dts/broadcom/rp1.dtsi
@@ -305,6 +305,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C0 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};
@@ -313,6 +315,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C1 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};
@@ -321,6 +325,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C2 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};
@@ -329,6 +335,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C3 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};
@@ -337,6 +345,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C4 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};
@@ -345,6 +355,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C5 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};
@@ -353,6 +365,8 @@
compatible = "snps,designware-i2c";
interrupts = <RP1_INT_I2C6 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&rp1_clocks RP1_CLK_SYS>;
+ i2c-scl-rising-time-ns = <65>;
+ i2c-scl-falling-time-ns = <100>;
status = "disabled";
};