target/linux/bcm27xx/patches-6.1/950-1259-ARM-dts-rp1-Add-I2C-timings.patch

   1 From 4c7a8e9e40d915c61df188d6b9f82836b616bd4f Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.com>
   3 Date: Tue, 16 Jan 2024 16:05:18 +0000
   4 Subject: [PATCH 1259/1295] ARM: dts: rp1: Add I2C timings
   5
   6 Add SCL rise and fall times, to allow the derivation of timings at
   7 arbitrary speeds.
   8
   9 Signed-off-by: Phil Elwell <phil@raspberrypi.com>
  10 ---
  11  arch/arm/boot/dts/rp1.dtsi | 14 ++++++++++++++
  12  1 file changed, 14 insertions(+)
  13
  14 --- a/arch/arm/boot/dts/rp1.dtsi
  15 +++ b/arch/arm/boot/dts/rp1.dtsi
  16 @@ -305,6 +305,8 @@
  17                         compatible = "snps,designware-i2c";
  18                         interrupts = <RP1_INT_I2C0 IRQ_TYPE_LEVEL_HIGH>;
  19                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  20 +                       i2c-scl-rising-time-ns = <65>;
  21 +                       i2c-scl-falling-time-ns = <100>;
  22                         status = "disabled";
  23                 };
  24
  25 @@ -313,6 +315,8 @@
  26                         compatible = "snps,designware-i2c";
  27                         interrupts = <RP1_INT_I2C1 IRQ_TYPE_LEVEL_HIGH>;
  28                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  29 +                       i2c-scl-rising-time-ns = <65>;
  30 +                       i2c-scl-falling-time-ns = <100>;
  31                         status = "disabled";
  32                 };
  33
  34 @@ -321,6 +325,8 @@
  35                         compatible = "snps,designware-i2c";
  36                         interrupts = <RP1_INT_I2C2 IRQ_TYPE_LEVEL_HIGH>;
  37                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  38 +                       i2c-scl-rising-time-ns = <65>;
  39 +                       i2c-scl-falling-time-ns = <100>;
  40                         status = "disabled";
  41                 };
  42
  43 @@ -329,6 +335,8 @@
  44                         compatible = "snps,designware-i2c";
  45                         interrupts = <RP1_INT_I2C3 IRQ_TYPE_LEVEL_HIGH>;
  46                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  47 +                       i2c-scl-rising-time-ns = <65>;
  48 +                       i2c-scl-falling-time-ns = <100>;
  49                         status = "disabled";
  50                 };
  51
  52 @@ -337,6 +345,8 @@
  53                         compatible = "snps,designware-i2c";
  54                         interrupts = <RP1_INT_I2C4 IRQ_TYPE_LEVEL_HIGH>;
  55                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  56 +                       i2c-scl-rising-time-ns = <65>;
  57 +                       i2c-scl-falling-time-ns = <100>;
  58                         status = "disabled";
  59                 };
  60
  61 @@ -345,6 +355,8 @@
  62                         compatible = "snps,designware-i2c";
  63                         interrupts = <RP1_INT_I2C5 IRQ_TYPE_LEVEL_HIGH>;
  64                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  65 +                       i2c-scl-rising-time-ns = <65>;
  66 +                       i2c-scl-falling-time-ns = <100>;
  67                         status = "disabled";
  68                 };
  69
  70 @@ -353,6 +365,8 @@
  71                         compatible = "snps,designware-i2c";
  72                         interrupts = <RP1_INT_I2C6 IRQ_TYPE_LEVEL_HIGH>;
  73                         clocks = <&rp1_clocks RP1_CLK_SYS>;
  74 +                       i2c-scl-rising-time-ns = <65>;
  75 +                       i2c-scl-falling-time-ns = <100>;
  76                         status = "disabled";
  77                 };
  78