[PATCH v3 0/6] MIPS: Fixes and improvements for CI20 board (JZ4780)

[PATCH v3 0/6] MIPS: Fixes and improvements for CI20 board (JZ4780)

[H. Nikolaus Schaller]

V3:
* dropped "drm: ingenic-drm: add MODULE_DEVICE_TABLE" because it will be resubmitted
  with a HDMI driver solution
* added Cc: stable@vger.kernel.org where appropriate (suggested by Paul Cercueil <paul@crapouillou.net>)
* squashed all other DTS and CONFIG changes into single patches (suggested by Paul Cercueil <paul@crapouillou.net>)

PATCH V2 2020-02-14 17:10:33:
* dropped "net: davicom: dm9000: allow to pass MAC address through mac_addr module parameter"
  from this series because it goes through the netdev tree
  (suggested by Andrew Lunn <andrew@lunn.ch>)
* added a "fixes:" for "MIPS: DTS: CI20: fix PMU definitions for ACT8600"
  and "MIPS: DTS: CI20: fix interrupt for pcf8563 RTC"
  (suggested by Andreas Kemnade <andreas@kemnade.info>)
* "i2c: jz4780: silence log flood on txabrt" dropped because it is
  replaced by a new version in v5.6 by Wolfram Sang <wsa@the-dreams.de>

PATCH V1 2020-02-11 22:41:43:
This patch set provides several improvements for the CI20 board:

* suppress warnings from i2c if device is not responding
* make ingenic-drm found through DT
* allow davicom dm9000 ethernet controller to use MAC address provided by U-Boot
* fix #include in jz4780.dtsi
* configure for loadable kernel modules
* add DTS for IR sensor and SW1 button
* configure so that LEDs, IR sensor, SW1 button have drivers
* fix DTS for ACT8600 PMU and configure driver
* fix interrupt of nxp,pcf8563

There is another patch set in our queue to add HDMI support on top of this work.

Signed-off-by: Paul Boddie <paul@boddie.org.uk>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>


Alex Smith (1):
  MIPS: DTS: CI20: add DT node for IR sensor

H. Nikolaus Schaller (5):
  MIPS: DTS: jz4780: add #includes for irq.h and gpio.h
  MIPS: DTS: CI20: fix PMU definitions for ACT8600
  MIPS: DTS: CI20: fix interrupt for pcf8563 RTC
  MIPS: DTS: CI20: multiple DTS improvements
  MIPS: CI20: defconfig: multiple improvements

 arch/mips/boot/dts/ingenic/ci20.dts    | 71 ++++++++++++++++++++------
 arch/mips/boot/dts/ingenic/jz4780.dtsi |  2 +
 arch/mips/configs/ci20_defconfig       | 21 ++++++++
 3 files changed, 78 insertions(+), 16 deletions(-)

-- 
2.23.0

[PATCH v3 1/6] MIPS: DTS: jz4780: add #includes for irq.h and gpio.h

[H. Nikolaus Schaller]

The constants from irq.h and gpio.h can and should be
used in the jz4780.dtsi and derived DTS like ci20.dts.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/mips/boot/dts/ingenic/jz4780.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi b/arch/mips/boot/dts/ingenic/jz4780.dtsi
index f928329b034b..112a24deff71 100644
--- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
+++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
@@ -1,6 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <dt-bindings/clock/jz4780-cgu.h>
 #include <dt-bindings/dma/jz4780-dma.h>
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/interrupt-controller/irq.h>
 
 / {
 	#address-cells = <1>;
-- 
2.23.0

Re: [PATCH v3 1/6] MIPS: DTS: jz4780: add #includes for irq.h and gpio.h

[Paul Cercueil]

Hi Nikolaus,


Le dim., févr. 16, 2020 at 21:20, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> The constants from irq.h and gpio.h can and should be
> used in the jz4780.dtsi and derived DTS like ci20.dts.
> 
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> ---
>  arch/mips/boot/dts/ingenic/jz4780.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/mips/boot/dts/ingenic/jz4780.dtsi 
> b/arch/mips/boot/dts/ingenic/jz4780.dtsi
> index f928329b034b..112a24deff71 100644
> --- a/arch/mips/boot/dts/ingenic/jz4780.dtsi
> +++ b/arch/mips/boot/dts/ingenic/jz4780.dtsi
> @@ -1,6 +1,8 @@
>  // SPDX-License-Identifier: GPL-2.0
>  #include <dt-bindings/clock/jz4780-cgu.h>
>  #include <dt-bindings/dma/jz4780-dma.h>
> +#include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/interrupt-controller/irq.h>

I don't think you need an extra patch for that - just add each include 
in the patch that first use them.

-Paul

> 
>  / {
>  	#address-cells = <1>;
> --
> 2.23.0
> 

[PATCH v3 2/6] MIPS: DTS: CI20: add DT node for IR sensor

[H. Nikolaus Schaller]

From: Alex Smith <alex.smith@imgtec.com>

The infrared sensor on the CI20 board is connected to a GPIO and can
be operated by using the gpio-ir-recv driver. Add a DT node for the
sensor to allow that driver to be used.

Signed-off-by: Alex Smith <alex.smith@imgtec.com>
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 37b93166bf22..59c104289ece 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -60,6 +60,11 @@
 		enable-active-high;
 	};
 
+	ir: ir-receiver {
+		compatible = "gpio-ir-receiver";
+		gpios = <&gpe 3 GPIO_ACTIVE_LOW>;
+	};
+
 	wlan0_power: fixedregulator@1 {
 		compatible = "regulator-fixed";
 		regulator-name = "wlan0_power";
-- 
2.23.0

[PATCH v3 3/6] MIPS: DTS: CI20: fix PMU definitions for ACT8600

[H. Nikolaus Schaller]

There is a ACT8600 on the CI20 board and the bindings of the
ACT8865 driver have changed without updating the CI20 device
tree. Therefore the PMU can not be probed successfully and
is running in power-on reset state.

Fix DT to match the latest act8865-regulator bindings.

Fixes: 73f2b940474d ("MIPS: CI20: DTS: Add I2C nodes")
Cc: stable@vger.kernel.org
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 48 ++++++++++++++++++++---------
 1 file changed, 33 insertions(+), 15 deletions(-)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 59c104289ece..4f48bc16fb52 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -153,6 +153,8 @@
 	pinctrl-0 = <&pins_uart4>;
 };
 
+#include <dt-bindings/regulator/active-semi,8865-regulator.h>
+
 &i2c0 {
 	status = "okay";
 
@@ -166,65 +168,81 @@
 		reg = <0x5a>;
 		status = "okay";
 
+/*
+Optional input supply properties:
+- for act8600:
+  - vp1-supply: The input supply for DCDC_REG1
+  - vp2-supply: The input supply for DCDC_REG2
+  - vp3-supply: The input supply for DCDC_REG3
+  - inl-supply: The input supply for LDO_REG5, LDO_REG6, LDO_REG7 and LDO_REG8
+  SUDCDC_REG4, LDO_REG9 and LDO_REG10 do not have separate supplies.
+*/
+
 		regulators {
 			vddcore: SUDCDC1 {
-				regulator-name = "VDDCORE";
+				regulator-name = "DCDC_REG1";
 				regulator-min-microvolt = <1100000>;
 				regulator-max-microvolt = <1100000>;
 				regulator-always-on;
 			};
 			vddmem: SUDCDC2 {
-				regulator-name = "VDDMEM";
+				regulator-name = "DCDC_REG2";
 				regulator-min-microvolt = <1500000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-always-on;
 			};
 			vcc_33: SUDCDC3 {
-				regulator-name = "VCC33";
+				regulator-name = "DCDC_REG3";
 				regulator-min-microvolt = <3300000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-always-on;
 			};
 			vcc_50: SUDCDC4 {
-				regulator-name = "VCC50";
+				regulator-name = "SUDCDC_REG4";
 				regulator-min-microvolt = <5000000>;
 				regulator-max-microvolt = <5000000>;
 				regulator-always-on;
 			};
 			vcc_25: LDO_REG5 {
-				regulator-name = "VCC25";
+				regulator-name = "LDO_REG5";
 				regulator-min-microvolt = <2500000>;
 				regulator-max-microvolt = <2500000>;
 				regulator-always-on;
 			};
 			wifi_io: LDO_REG6 {
-				regulator-name = "WIFIIO";
+				regulator-name = "LDO_REG6";
 				regulator-min-microvolt = <2500000>;
 				regulator-max-microvolt = <2500000>;
 				regulator-always-on;
 			};
 			vcc_28: LDO_REG7 {
-				regulator-name = "VCC28";
+				regulator-name = "LDO_REG7";
 				regulator-min-microvolt = <2800000>;
 				regulator-max-microvolt = <2800000>;
 				regulator-always-on;
 			};
 			vcc_15: LDO_REG8 {
-				regulator-name = "VCC15";
+				regulator-name = "LDO_REG8";
 				regulator-min-microvolt = <1500000>;
 				regulator-max-microvolt = <1500000>;
 				regulator-always-on;
 			};
-			vcc_18: LDO_REG9 {
-				regulator-name = "VCC18";
-				regulator-min-microvolt = <1800000>;
-				regulator-max-microvolt = <1800000>;
+			vrtc_18: LDO_REG9 {
+				regulator-name = "LDO_REG9";
+				/* Despite the datasheet stating 3.3V for REG9 and
+				   driver expecting that, REG9 outputs 1.8V.
+				   Likely the CI20 uses a chip variant.
+				   Since it is a simple on/off LDO the exact values
+				   do not matter.
+				*/
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
 				regulator-always-on;
 			};
 			vcc_11: LDO_REG10 {
-				regulator-name = "VCC11";
-				regulator-min-microvolt = <1100000>;
-				regulator-max-microvolt = <1100000>;
+				regulator-name = "LDO_REG10";
+				regulator-min-microvolt = <1200000>;
+				regulator-max-microvolt = <1200000>;
 				regulator-always-on;
 			};
 		};
-- 
2.23.0

Re: [PATCH v3 3/6] MIPS: DTS: CI20: fix PMU definitions for ACT8600

[Paul Cercueil]

Hi Nikolaus,


Le dim., févr. 16, 2020 at 21:20, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> There is a ACT8600 on the CI20 board and the bindings of the
> ACT8865 driver have changed without updating the CI20 device
> tree. Therefore the PMU can not be probed successfully and
> is running in power-on reset state.
> 
> Fix DT to match the latest act8865-regulator bindings.
> 
> Fixes: 73f2b940474d ("MIPS: CI20: DTS: Add I2C nodes")
> Cc: stable@vger.kernel.org
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> ---
>  arch/mips/boot/dts/ingenic/ci20.dts | 48 
> ++++++++++++++++++++---------
>  1 file changed, 33 insertions(+), 15 deletions(-)
> 
> diff --git a/arch/mips/boot/dts/ingenic/ci20.dts 
> b/arch/mips/boot/dts/ingenic/ci20.dts
> index 59c104289ece..4f48bc16fb52 100644
> --- a/arch/mips/boot/dts/ingenic/ci20.dts
> +++ b/arch/mips/boot/dts/ingenic/ci20.dts
> @@ -153,6 +153,8 @@
>  	pinctrl-0 = <&pins_uart4>;
>  };
> 
> +#include <dt-bindings/regulator/active-semi,8865-regulator.h>

Includes at the beginning of the file please. Keeps it tidy.

> +
>  &i2c0 {
>  	status = "okay";
> 
> @@ -166,65 +168,81 @@
>  		reg = <0x5a>;
>  		status = "okay";
> 
> +/*
> +Optional input supply properties:
> +- for act8600:
> +  - vp1-supply: The input supply for DCDC_REG1
> +  - vp2-supply: The input supply for DCDC_REG2
> +  - vp3-supply: The input supply for DCDC_REG3
> +  - inl-supply: The input supply for LDO_REG5, LDO_REG6, LDO_REG7 
> and LDO_REG8
> +  SUDCDC_REG4, LDO_REG9 and LDO_REG10 do not have separate supplies.
> +*/
> +
>  		regulators {
>  			vddcore: SUDCDC1 {
> -				regulator-name = "VDDCORE";
> +				regulator-name = "DCDC_REG1";
>  				regulator-min-microvolt = <1100000>;
>  				regulator-max-microvolt = <1100000>;
>  				regulator-always-on;
>  			};
>  			vddmem: SUDCDC2 {
> -				regulator-name = "VDDMEM";
> +				regulator-name = "DCDC_REG2";
>  				regulator-min-microvolt = <1500000>;
>  				regulator-max-microvolt = <1500000>;
>  				regulator-always-on;
>  			};
>  			vcc_33: SUDCDC3 {
> -				regulator-name = "VCC33";
> +				regulator-name = "DCDC_REG3";
>  				regulator-min-microvolt = <3300000>;
>  				regulator-max-microvolt = <3300000>;
>  				regulator-always-on;
>  			};
>  			vcc_50: SUDCDC4 {
> -				regulator-name = "VCC50";
> +				regulator-name = "SUDCDC_REG4";
>  				regulator-min-microvolt = <5000000>;
>  				regulator-max-microvolt = <5000000>;
>  				regulator-always-on;
>  			};
>  			vcc_25: LDO_REG5 {
> -				regulator-name = "VCC25";
> +				regulator-name = "LDO_REG5";
>  				regulator-min-microvolt = <2500000>;
>  				regulator-max-microvolt = <2500000>;
>  				regulator-always-on;
>  			};
>  			wifi_io: LDO_REG6 {
> -				regulator-name = "WIFIIO";
> +				regulator-name = "LDO_REG6";
>  				regulator-min-microvolt = <2500000>;
>  				regulator-max-microvolt = <2500000>;
>  				regulator-always-on;
>  			};
>  			vcc_28: LDO_REG7 {
> -				regulator-name = "VCC28";
> +				regulator-name = "LDO_REG7";
>  				regulator-min-microvolt = <2800000>;
>  				regulator-max-microvolt = <2800000>;
>  				regulator-always-on;
>  			};
>  			vcc_15: LDO_REG8 {
> -				regulator-name = "VCC15";
> +				regulator-name = "LDO_REG8";
>  				regulator-min-microvolt = <1500000>;
>  				regulator-max-microvolt = <1500000>;
>  				regulator-always-on;
>  			};
> -			vcc_18: LDO_REG9 {
> -				regulator-name = "VCC18";
> -				regulator-min-microvolt = <1800000>;
> -				regulator-max-microvolt = <1800000>;
> +			vrtc_18: LDO_REG9 {
> +				regulator-name = "LDO_REG9";
> +				/* Despite the datasheet stating 3.3V for REG9 and
> +				   driver expecting that, REG9 outputs 1.8V.
> +				   Likely the CI20 uses a chip variant.
> +				   Since it is a simple on/off LDO the exact values
> +				   do not matter.
> +				*/
> +				regulator-min-microvolt = <3300000>;
> +				regulator-max-microvolt = <3300000>;
>  				regulator-always-on;
>  			};
>  			vcc_11: LDO_REG10 {
> -				regulator-name = "VCC11";
> -				regulator-min-microvolt = <1100000>;
> -				regulator-max-microvolt = <1100000>;
> +				regulator-name = "LDO_REG10";
> +				regulator-min-microvolt = <1200000>;
> +				regulator-max-microvolt = <1200000>;
>  				regulator-always-on;
>  			};
>  		};
> --
> 2.23.0
> 

Re: [PATCH v3 3/6] MIPS: DTS: CI20: fix PMU definitions for ACT8600

[H. Nikolaus Schaller]

> Am 28.02.2020 um 15:34 schrieb Paul Cercueil <paul@crapouillou.net>:
> 
> Hi Nikolaus,
> 
> 
> Le dim., févr. 16, 2020 at 21:20, H. Nikolaus Schaller <hns@goldelico.com> a écrit :
>> There is a ACT8600 on the CI20 board and the bindings of the
>> ACT8865 driver have changed without updating the CI20 device
>> tree. Therefore the PMU can not be probed successfully and
>> is running in power-on reset state.
>> Fix DT to match the latest act8865-regulator bindings.
>> Fixes: 73f2b940474d ("MIPS: CI20: DTS: Add I2C nodes")
>> Cc: stable@vger.kernel.org
>> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
>> ---
>> arch/mips/boot/dts/ingenic/ci20.dts | 48 ++++++++++++++++++++---------
>> 1 file changed, 33 insertions(+), 15 deletions(-)
>> diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
>> index 59c104289ece..4f48bc16fb52 100644
>> --- a/arch/mips/boot/dts/ingenic/ci20.dts
>> +++ b/arch/mips/boot/dts/ingenic/ci20.dts
>> @@ -153,6 +153,8 @@
>> 	pinctrl-0 = <&pins_uart4>;
>> };
>> +#include <dt-bindings/regulator/active-semi,8865-regulator.h>
> 
> Includes at the beginning of the file please. Keeps it tidy.

Ok.

Well, I am infected by omap boards where this is not uncommon:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm/boot/dts/omap3-beagle-xm.dts?h=v5.6-rc3#n294

But it may be historic and not a good style.

BR and thanks,
Nikolaus

[PATCH v3 4/6] MIPS: DTS: CI20: fix interrupt for pcf8563 RTC

[H. Nikolaus Schaller]

Interrupts should not be specified by interrupt line but by
gpio parent and reference.

Fixes: 73f2b940474d ("MIPS: CI20: DTS: Add I2C nodes")
Cc: stable@vger.kernel.org
Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 4f48bc16fb52..1ab55be707af 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -284,7 +284,9 @@ Optional input supply properties:
 		rtc@51 {
 			compatible = "nxp,pcf8563";
 			reg = <0x51>;
-			interrupts = <110>;
+
+			interrupt-parent = <&gpf>;
+			interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
 		};
 };
 
-- 
2.23.0

[PATCH v3 5/6] MIPS: DTS: CI20: multiple DTS improvements

[H. Nikolaus Schaller]

a) add DT node for SW1 as Enter button

The SW1 button can be used as a simple one-button keyboard
and is connected to PD17.

Note: SW1 has a second meaning to change the boot sequence
when pressed while powering on.

b) give eth0_power a defined voltage.

This is a 3.3V power switch (DVNET3.3V ).

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/mips/boot/dts/ingenic/ci20.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
index 1ab55be707af..4bacefa2cfce 100644
--- a/arch/mips/boot/dts/ingenic/ci20.dts
+++ b/arch/mips/boot/dts/ingenic/ci20.dts
@@ -4,6 +4,7 @@
 #include "jz4780.dtsi"
 #include <dt-bindings/clock/ingenic,tcu.h>
 #include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
 
 / {
 	compatible = "img,ci20", "ingenic,jz4780";
@@ -25,6 +26,17 @@
 		       0x30000000 0x30000000>;
 	};
 
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		sw1 {
+			label = "ci20:sw1";
+			linux,code = <KEY_ENTER>;
+			gpios = <&gpd 17 GPIO_ACTIVE_HIGH>;
+			wakeup-source;
+		};
+	};
+
 	leds {
 		compatible = "gpio-leds";
 
@@ -56,6 +68,8 @@
 	eth0_power: fixedregulator@0 {
 		compatible = "regulator-fixed";
 		regulator-name = "eth0_power";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
 		gpio = <&gpb 25 GPIO_ACTIVE_LOW>;
 		enable-active-high;
 	};
-- 
2.23.0

Re: [PATCH v3 5/6] MIPS: DTS: CI20: multiple DTS improvements

[Paul Cercueil]

Hi Nikolaus,

Le dim., févr. 16, 2020 at 21:20, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> a) add DT node for SW1 as Enter button
> 
> The SW1 button can be used as a simple one-button keyboard
> and is connected to PD17.
> 
> Note: SW1 has a second meaning to change the boot sequence
> when pressed while powering on.
> 
> b) give eth0_power a defined voltage.
> 
> This is a 3.3V power switch (DVNET3.3V ).
> 
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> ---
>  arch/mips/boot/dts/ingenic/ci20.dts | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/arch/mips/boot/dts/ingenic/ci20.dts 
> b/arch/mips/boot/dts/ingenic/ci20.dts
> index 1ab55be707af..4bacefa2cfce 100644
> --- a/arch/mips/boot/dts/ingenic/ci20.dts
> +++ b/arch/mips/boot/dts/ingenic/ci20.dts
> @@ -4,6 +4,7 @@
>  #include "jz4780.dtsi"
>  #include <dt-bindings/clock/ingenic,tcu.h>
>  #include <dt-bindings/gpio/gpio.h>
> +#include <dt-bindings/input/input.h>
> 
>  / {
>  	compatible = "img,ci20", "ingenic,jz4780";
> @@ -25,6 +26,17 @@
>  		       0x30000000 0x30000000>;
>  	};
> 
> +	gpio-keys {
> +		compatible = "gpio-keys";
> +
> +		sw1 {
> +			label = "ci20:sw1";
> +			linux,code = <KEY_ENTER>;

Why KEY_ENTER? It would make it impossible for applications to know 
that it's actually the switch that has been pressed an not the keyboard.

> +			gpios = <&gpd 17 GPIO_ACTIVE_HIGH>;
> +			wakeup-source;
> +		};
> +	};
> +
>  	leds {
>  		compatible = "gpio-leds";
> 
> @@ -56,6 +68,8 @@
>  	eth0_power: fixedregulator@0 {
>  		compatible = "regulator-fixed";
>  		regulator-name = "eth0_power";
> +		regulator-min-microvolt = <3300000>;
> +		regulator-max-microvolt = <3300000>;
>  		gpio = <&gpb 25 GPIO_ACTIVE_LOW>;
>  		enable-active-high;
>  	};
> --
> 2.23.0
> 

Re: [PATCH v3 5/6] MIPS: DTS: CI20: multiple DTS improvements

[H. Nikolaus Schaller]

> Am 28.02.2020 um 15:36 schrieb Paul Cercueil <paul@crapouillou.net>:
> 
> Hi Nikolaus,
> 
> Le dim., févr. 16, 2020 at 21:20, H. Nikolaus Schaller <hns@goldelico.com> a écrit :
>> a) add DT node for SW1 as Enter button
>> The SW1 button can be used as a simple one-button keyboard
>> and is connected to PD17.
>> Note: SW1 has a second meaning to change the boot sequence
>> when pressed while powering on.
>> b) give eth0_power a defined voltage.
>> This is a 3.3V power switch (DVNET3.3V ).
>> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
>> ---
>> arch/mips/boot/dts/ingenic/ci20.dts | 14 ++++++++++++++
>> 1 file changed, 14 insertions(+)
>> diff --git a/arch/mips/boot/dts/ingenic/ci20.dts b/arch/mips/boot/dts/ingenic/ci20.dts
>> index 1ab55be707af..4bacefa2cfce 100644
>> --- a/arch/mips/boot/dts/ingenic/ci20.dts
>> +++ b/arch/mips/boot/dts/ingenic/ci20.dts
>> @@ -4,6 +4,7 @@
>> #include "jz4780.dtsi"
>> #include <dt-bindings/clock/ingenic,tcu.h>
>> #include <dt-bindings/gpio/gpio.h>
>> +#include <dt-bindings/input/input.h>
>> / {
>> 	compatible = "img,ci20", "ingenic,jz4780";
>> @@ -25,6 +26,17 @@
>> 		       0x30000000 0x30000000>;
>> 	};
>> +	gpio-keys {
>> +		compatible = "gpio-keys";
>> +
>> +		sw1 {
>> +			label = "ci20:sw1";
>> +			linux,code = <KEY_ENTER>;
> 
> Why KEY_ENTER? It would make it impossible for applications to know that it's actually the switch that has been pressed an not the keyboard.

Ah, ok. I didn't think about the use case that a physical keyboard is connected to one of the USB ports.

What else would you propose? I think your argument is for every existing KEY_CODE. Should we add a new one?

BR and thanks,
Nikolaus

Re: [PATCH v3 5/6] MIPS: DTS: CI20: multiple DTS improvements

[Paul Cercueil]

Le ven., févr. 28, 2020 at 15:42, H. Nikolaus Schaller 
<hns@goldelico.com> a écrit :
> 
>>  Am 28.02.2020 um 15:36 schrieb Paul Cercueil <paul@crapouillou.net>:
>> 
>>  Hi Nikolaus,
>> 
>>  Le dim., févr. 16, 2020 at 21:20, H. Nikolaus Schaller 
>> <hns@goldelico.com> a écrit :
>>>  a) add DT node for SW1 as Enter button
>>>  The SW1 button can be used as a simple one-button keyboard
>>>  and is connected to PD17.
>>>  Note: SW1 has a second meaning to change the boot sequence
>>>  when pressed while powering on.
>>>  b) give eth0_power a defined voltage.
>>>  This is a 3.3V power switch (DVNET3.3V ).
>>>  Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
>>>  ---
>>>  arch/mips/boot/dts/ingenic/ci20.dts | 14 ++++++++++++++
>>>  1 file changed, 14 insertions(+)
>>>  diff --git a/arch/mips/boot/dts/ingenic/ci20.dts 
>>> b/arch/mips/boot/dts/ingenic/ci20.dts
>>>  index 1ab55be707af..4bacefa2cfce 100644
>>>  --- a/arch/mips/boot/dts/ingenic/ci20.dts
>>>  +++ b/arch/mips/boot/dts/ingenic/ci20.dts
>>>  @@ -4,6 +4,7 @@
>>>  #include "jz4780.dtsi"
>>>  #include <dt-bindings/clock/ingenic,tcu.h>
>>>  #include <dt-bindings/gpio/gpio.h>
>>>  +#include <dt-bindings/input/input.h>
>>>  / {
>>>  	compatible = "img,ci20", "ingenic,jz4780";
>>>  @@ -25,6 +26,17 @@
>>>  		       0x30000000 0x30000000>;
>>>  	};
>>>  +	gpio-keys {
>>>  +		compatible = "gpio-keys";
>>>  +
>>>  +		sw1 {
>>>  +			label = "ci20:sw1";
>>>  +			linux,code = <KEY_ENTER>;
>> 
>>  Why KEY_ENTER? It would make it impossible for applications to know 
>> that it's actually the switch that has been pressed an not the 
>> keyboard.
> 
> Ah, ok. I didn't think about the use case that a physical keyboard is 
> connected to one of the USB ports.
> 
> What else would you propose? I think your argument is for every 
> existing KEY_CODE. Should we add a new one?

There are plenty you can use. I'd suggest KEY_F13 as it's 
general-purpose.

-Paul

[PATCH v3 6/6] MIPS: CI20: defconfig: multiple improvements

[H. Nikolaus Schaller]

a) configure for supporting modules

Not all drivers need to be compiled into the kernel.
Support building and loading of kernel modules.

b) compile leds-gpio driver into the kernel and configure for LED triggers

DTS has been augmented to add some gpio-leds. We need the leds-gpio driver
and enable the triggers.

c) configure CONFIG_REGULATOR_ACT8865 for PMU

The PMU on the CI20 board is an ACT8600 using the ACT8865 driver.
Since it is not compiled, the PMU and the CI20 board is running in
power-on reset state of the PMU.

d) compile gpio-ir driver

The CI20 board has a gpio based IR receiver.

e) configure for CONFIG_KEYBOARD_GPIO=m

The SW1 button is hooked up to send input events.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
---
 arch/mips/configs/ci20_defconfig | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/mips/configs/ci20_defconfig b/arch/mips/configs/ci20_defconfig
index be41df2a81fb..0db0088bbc1c 100644
--- a/arch/mips/configs/ci20_defconfig
+++ b/arch/mips/configs/ci20_defconfig
@@ -1,4 +1,5 @@
 # CONFIG_LOCALVERSION_AUTO is not set
+CONFIG_MODULES=y
 CONFIG_KERNEL_XZ=y
 CONFIG_SYSVIPC=y
 CONFIG_POSIX_MQUEUE=y
@@ -88,12 +89,14 @@ CONFIG_I2C_JZ4780=y
 CONFIG_SPI=y
 CONFIG_SPI_GPIO=y
 CONFIG_GPIO_SYSFS=y
+CONFIG_KEYBOARD_GPIO=m
 # CONFIG_HWMON is not set
 CONFIG_WATCHDOG=y
 CONFIG_JZ4740_WDT=y
 CONFIG_REGULATOR=y
 CONFIG_REGULATOR_DEBUG=y
 CONFIG_REGULATOR_FIXED_VOLTAGE=y
+CONFIG_REGULATOR_ACT8865=y
 # CONFIG_VGA_CONSOLE is not set
 # CONFIG_HID is not set
 # CONFIG_USB_SUPPORT is not set
@@ -166,3 +169,21 @@ CONFIG_STACKTRACE=y
 # CONFIG_FTRACE is not set
 CONFIG_CMDLINE_BOOL=y
 CONFIG_CMDLINE="earlycon console=ttyS4,115200 clk_ignore_unused"
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_GPIO=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_MTD=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_ONESHOT=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_BACKLIGHT=m
+CONFIG_LEDS_TRIGGER_CPU=y
+CONFIG_LEDS_TRIGGER_DEFAULT_ON=y
+CONFIG_LEDS_TRIGGER_TRANSIENT=y
+CONFIG_LEDS_TRIGGER_CAMERA=m
+CONFIG_LIRC=y
+CONFIG_MEDIA_SUPPORT=m
+CONFIG_RC_DEVICES=y
+CONFIG_IR_GPIO_CIR=m
+CONFIG_IR_GPIO_TX=m
-- 
2.23.0