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>

diff --git a/arch/arm/boot/dts/broadcom/rp1.dtsi b/arch/arm/boot/dts/broadcom/rp1.dtsi
index 8c2ff53a045adf9d2324c108e08018642893c983..46f80a729a9cca2c381b5afb5b63ed0413bec9e4 100644 (file)
--- 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";
                };