diff options
Diffstat (limited to 'target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch')
| -rw-r--r-- | target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch | 158 |
1 files changed, 158 insertions, 0 deletions
diff --git a/target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch b/target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch new file mode 100644 index 0000000000..8a8a35bb34 --- /dev/null +++ b/target/linux/bcm27xx/patches-5.15/950-0661-dtoverlays-Add-option-for-PoE-HAT-to-use-Linux-I2C-i.patch @@ -0,0 +1,158 @@ +From 7d4346817f31105ed07dd4e3e9fd2294c85a5fee Mon Sep 17 00:00:00 2001 +From: Dave Stevenson <dave.stevenson@raspberrypi.com> +Date: Wed, 19 Jan 2022 17:29:13 +0000 +Subject: [PATCH] dtoverlays: Add option for PoE HAT to use Linux I2C + instead of FW. + +Adds parameter "i2c" to use the PoE HAT I2C MFD driver to instantiate +the PoE HAT drivers, instead of being off the firmware. + +Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com> +--- + arch/arm/boot/dts/overlays/README | 4 ++ + .../arm/boot/dts/overlays/rpi-poe-overlay.dts | 62 +++++++++++++++---- + .../dts/overlays/rpi-poe-plus-overlay.dts | 15 +++++ + 3 files changed, 69 insertions(+), 12 deletions(-) + +--- a/arch/arm/boot/dts/overlays/README ++++ b/arch/arm/boot/dts/overlays/README +@@ -2858,6 +2858,8 @@ Params: poe_fan_temp0 Temperat + speeds up (default 55000) + poe_fan_temp3_hyst Temperature delta (in millicelcius) at which + the fan slows down (default 5000) ++ i2c Control the fan via Linux I2C drivers instead of ++ the firmware. + + + Name: rpi-poe-plus +@@ -2879,6 +2881,8 @@ Params: poe_fan_temp0 Temperat + speeds up (default 55000) + poe_fan_temp3_hyst Temperature delta (in millicelcius) at which + the fan slows down (default 5000) ++ i2c Control the fan via Linux I2C drivers instead of ++ the firmware. + + + Name: rpi-proto +--- a/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts ++++ b/arch/arm/boot/dts/overlays/rpi-poe-overlay.dts +@@ -8,16 +8,6 @@ + compatible = "brcm,bcm2835"; + + fragment@0 { +- target = <&firmware>; +- __overlay__ { +- fwpwm: pwm { +- compatible = "raspberrypi,firmware-poe-pwm"; +- #pwm-cells = <2>; +- }; +- }; +- }; +- +- fragment@1 { + target-path = "/"; + __overlay__ { + fan: pwm-fan { +@@ -29,7 +19,7 @@ + }; + }; + +- fragment@2 { ++ fragment@1 { + target = <&cpu_thermal>; + __overlay__ { + trips { +@@ -75,7 +65,7 @@ + }; + }; + +- fragment@3 { ++ fragment@2 { + target-path = "/__overrides__"; + __overlay__ { + poe_fan_temp0 = <&trip0>,"temperature:0"; +@@ -89,6 +79,52 @@ + }; + }; + ++ fragment@3 { ++ target = <&firmware>; ++ __overlay__ { ++ fwpwm: pwm { ++ compatible = "raspberrypi,firmware-poe-pwm"; ++ #pwm-cells = <2>; ++ }; ++ }; ++ }; ++ ++ fragment@4 { ++ target = <&i2c0>; ++ __dormant__ { ++ #address-cells = <1>; ++ #size-cells = <0>; ++ status = "okay"; ++ ++ poe_mfd: poe@51 { ++ compatible = "raspberrypi,poe-core"; ++ reg = <0x51>; ++ status = "okay"; ++ ++ poe_mfd_pwm: poe_pwm@f0 { ++ compatible = "raspberrypi,poe-pwm"; ++ reg = <0xf0>; ++ status = "okay"; ++ #pwm-cells = <2>; ++ }; ++ }; ++ }; ++ }; ++ ++ fragment@5 { ++ target = <&i2c0if>; ++ __dormant__ { ++ status = "okay"; ++ }; ++ }; ++ ++ fragment@6 { ++ target = <&i2c0mux>; ++ __dormant__ { ++ status = "okay"; ++ }; ++ }; ++ + __overrides__ { + poe_fan_temp0 = <&trip0>,"temperature:0"; + poe_fan_temp0_hyst = <&trip0>,"hysteresis:0"; +@@ -98,5 +134,7 @@ + poe_fan_temp2_hyst = <&trip2>,"hysteresis:0"; + poe_fan_temp3 = <&trip3>,"temperature:0"; + poe_fan_temp3_hyst = <&trip3>,"hysteresis:0"; ++ i2c = <0>, "-3+4+5+6", ++ <&fan>,"pwms:0=",<&poe_mfd_pwm>; + }; + }; +--- a/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts ++++ b/arch/arm/boot/dts/overlays/rpi-poe-plus-overlay.dts +@@ -16,6 +16,21 @@ + }; + }; + }; ++ fragment@11 { ++ target = <&poe_mfd>; ++ __dormant__ { ++ rpi-poe-power-supply@f2 { ++ compatible = "raspberrypi,rpi-poe-power-supply"; ++ reg = <0xf2>; ++ status = "okay"; ++ }; ++ }; ++ }; ++ ++ __overrides__ { ++ i2c = <0>, "-3+4+5+6-10+11", ++ <&fan>,"pwms:0=",<&poe_mfd_pwm>; ++ }; + }; + + &fan { |