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* [PATCH 0/3] SAMA5D2 i2c bus recovery testing
@ 2019-12-05 14:03 Kamel Bouhara
  2019-12-05 14:03 ` [PATCH 1/3] dt-bindings: i2c: at91: document optional bus recovery properties Kamel Bouhara
                   ` (3 more replies)
  0 siblings, 4 replies; 6+ messages in thread
From: Kamel Bouhara @ 2019-12-05 14:03 UTC (permalink / raw)
  To: Codrin.Ciubotariu
  Cc: Kamel Bouhara, Alexandre Belloni, Ludovic Desroches, linux-arm-kernel

Here are the sama5d2 patches, as there is not pinmux defined in the
dtsi. I choosed to only apply it to derivated board as the i2c
configuration is specific for each.

Of course, it could be great if could test it on the ptc board as well.

Best Regards,
Kamel

Kamel Bouhara (3):
  dt-bindings: i2c: at91: document optional bus recovery properties
  i2c: at91: implement i2c bus recovery
  ARM: at91/dt: sama5d2: add i2c gpio pinctrl

 .../devicetree/bindings/i2c/i2c-at91.txt      | 10 +++
 arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts     | 33 +++++++++-
 arch/arm/boot/dts/at91-sama5d2_xplained.dts   | 33 +++++++++-
 drivers/i2c/busses/i2c-at91-master.c          | 64 +++++++++++++++++++
 drivers/i2c/busses/i2c-at91.h                 |  8 +++
 5 files changed, 142 insertions(+), 6 deletions(-)

--
2.24.0


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^ permalink raw reply	[flat|nested] 6+ messages in thread
* [PATCH 1/3] dt-bindings: i2c: at91: document optional bus recovery properties
  2019-12-05 14:03 [PATCH 0/3] SAMA5D2 i2c bus recovery testing Kamel Bouhara
@ 2019-12-05 14:03 ` Kamel Bouhara
  2019-12-05 14:03 ` [PATCH 2/3] i2c: at91: implement i2c bus recovery Kamel Bouhara
                   ` (2 subsequent siblings)
  3 siblings, 0 replies; 6+ messages in thread
From: Kamel Bouhara @ 2019-12-05 14:03 UTC (permalink / raw)
  To: Codrin.Ciubotariu
  Cc: Kamel Bouhara, Alexandre Belloni, Ludovic Desroches, linux-arm-kernel

The at91 I2C controller can support bus recovery by re-assigning SCL
and SDA to gpios. Add the optional pinctrl and gpio properties to do
so.

Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
---
 Documentation/devicetree/bindings/i2c/i2c-at91.txt | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/Documentation/devicetree/bindings/i2c/i2c-at91.txt b/Documentation/devicetree/bindings/i2c/i2c-at91.txt
index b7cec17c3daf..8ea2ce5d8610 100644
--- a/Documentation/devicetree/bindings/i2c/i2c-at91.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c-at91.txt
@@ -19,8 +19,13 @@ Optional properties:
   capable I2C controllers.
 - i2c-sda-hold-time-ns: TWD hold time, only available for "atmel,sama5d4-i2c"
   and "atmel,sama5d2-i2c".
+- scl-gpios: specify the gpio related to SCL pin
+- sda-gpios: specify the gpio related to SDA pin
+- pinctrl: add extra pinctrl to configure i2c pins to gpio function for i2c
+  bus recovery, call it "gpio" state
 - Child nodes conforming to i2c bus binding
 
+
 Examples :
 
 i2c0: i2c@fff84000 {
@@ -55,6 +60,11 @@ i2c0: i2c@f8034600 {
 	clocks = <&flx0>;
 	atmel,fifo-size = <16>;
 	i2c-sda-hold-time-ns = <336>;
+	pinctrl-names = "default", "gpio";
+	pinctrl-0 = <&pinctrl_i2c0>;
+	pinctrl-1 = <&pinctrl_i2c0_gpio>;
+	sda-gpios = <&pioA 30 GPIO_ACTIVE_HIGH>;
+	scl-gpios = <&pioA 31 GPIO_ACTIVE_HIGH>;
 
 	wm8731: wm8731@1a {
 		compatible = "wm8731";
-- 
2.24.0


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^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 2/3] i2c: at91: implement i2c bus recovery
  2019-12-05 14:03 [PATCH 0/3] SAMA5D2 i2c bus recovery testing Kamel Bouhara
  2019-12-05 14:03 ` [PATCH 1/3] dt-bindings: i2c: at91: document optional bus recovery properties Kamel Bouhara
@ 2019-12-05 14:03 ` Kamel Bouhara
  2019-12-05 14:03 ` [PATCH 3/3] ARM: at91/dt: sama5d2: add i2c gpio pinctrl Kamel Bouhara
  2019-12-16 10:10 ` [PATCH 0/3] SAMA5D2 i2c bus recovery testing Ludovic Desroches
  3 siblings, 0 replies; 6+ messages in thread
From: Kamel Bouhara @ 2019-12-05 14:03 UTC (permalink / raw)
  To: Codrin.Ciubotariu
  Cc: Kamel Bouhara, Alexandre Belloni, Ludovic Desroches, linux-arm-kernel

Implement i2c bus recovery when slaves devices might hold SDA low.
In this case re-assign SCL/SDA to gpios and issue 9 dummy clock pulses
until the slave release SDA.

Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
---
 drivers/i2c/busses/i2c-at91-master.c | 64 ++++++++++++++++++++++++++++
 drivers/i2c/busses/i2c-at91.h        |  8 ++++
 2 files changed, 72 insertions(+)

diff --git a/drivers/i2c/busses/i2c-at91-master.c b/drivers/i2c/busses/i2c-at91-master.c
index a3fcc35ffd3b..e279129e6a76 100644
--- a/drivers/i2c/busses/i2c-at91-master.c
+++ b/drivers/i2c/busses/i2c-at91-master.c
@@ -18,11 +18,13 @@
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/err.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/of.h>
 #include <linux/of_device.h>
+#include <linux/pinctrl/consumer.h>
 #include <linux/platform_device.h>
 #include <linux/platform_data/dma-atmel.h>
 #include <linux/pm_runtime.h>
@@ -554,6 +556,7 @@ static int at91_do_twi_transfer(struct at91_twi_dev *dev)
 	if (time_left == 0) {
 		dev->transfer_status |= at91_twi_read(dev, AT91_TWI_SR);
 		dev_err(dev->dev, "controller timed out\n");
+		i2c_recover_bus(&dev->adapter);
 		at91_init_twi_bus(dev);
 		ret = -ETIMEDOUT;
 		goto error;
@@ -768,6 +771,63 @@ static int at91_twi_configure_dma(struct at91_twi_dev *dev, u32 phy_addr)
 	return ret;
 }
 
+static void at91_prepare_twi_recovery(struct i2c_adapter *adap)
+{
+	struct at91_twi_dev *dev = i2c_get_adapdata(adap);
+
+	pinctrl_select_state(dev->pinctrl, dev->pinctrl_pins_gpio);
+}
+
+static void at91_unprepare_twi_recovery(struct i2c_adapter *adap)
+{
+	struct at91_twi_dev *dev = i2c_get_adapdata(adap);
+
+	pinctrl_select_state(dev->pinctrl, dev->pinctrl_pins_default);
+}
+
+static int at91_init_twi_recovery_info(struct platform_device *pdev,
+				       struct at91_twi_dev *dev)
+{
+	struct i2c_bus_recovery_info *rinfo = &dev->rinfo;
+
+	dev->pinctrl = devm_pinctrl_get(&pdev->dev);
+	if (!dev->pinctrl || IS_ERR(dev->pinctrl)) {
+		dev_info(dev->dev, "can't get pinctrl, bus recovery not supported\n");
+		return PTR_ERR(dev->pinctrl);
+	}
+
+	dev->pinctrl_pins_default = pinctrl_lookup_state(dev->pinctrl,
+							 PINCTRL_STATE_DEFAULT);
+	dev->pinctrl_pins_gpio = pinctrl_lookup_state(dev->pinctrl,
+						      "gpio");
+	rinfo->sda_gpiod = devm_gpiod_get(&pdev->dev, "sda", GPIOD_IN);
+	if (PTR_ERR(rinfo->sda_gpiod) == -EPROBE_DEFER)
+		return -EPROBE_DEFER;
+
+	rinfo->scl_gpiod = devm_gpiod_get(&pdev->dev, "scl",
+					  GPIOD_OUT_HIGH_OPEN_DRAIN);
+	if (PTR_ERR(rinfo->scl_gpiod) == -EPROBE_DEFER)
+		return -EPROBE_DEFER;
+
+	if (IS_ERR(rinfo->sda_gpiod) ||
+	    IS_ERR(rinfo->scl_gpiod) ||
+	    IS_ERR(dev->pinctrl_pins_default) ||
+	    IS_ERR(dev->pinctrl_pins_gpio)) {
+		dev_info(&pdev->dev, "recovery information incomplete\n");
+		return -EINVAL;
+	}
+
+	dev_info(&pdev->dev, "using scl%s for recovery\n",
+		 rinfo->sda_gpiod ? ",sda" : "");
+
+	rinfo->prepare_recovery = at91_prepare_twi_recovery;
+	rinfo->unprepare_recovery = at91_unprepare_twi_recovery;
+	rinfo->recover_bus = i2c_generic_scl_recovery;
+	dev->adapter.bus_recovery_info = rinfo;
+
+	return 0;
+}
+
 int at91_twi_probe_master(struct platform_device *pdev,
 			  u32 phy_addr, struct at91_twi_dev *dev)
 {
@@ -795,6 +855,10 @@ int at91_twi_probe_master(struct platform_device *pdev,
 
 	at91_calc_twi_clock(dev);
 
+	rc = at91_init_twi_recovery_info(pdev, dev);
+	if (rc == -EPROBE_DEFER)
+		return rc;
+
 	dev->adapter.algo = &at91_twi_algorithm;
 	dev->adapter.quirks = &at91_twi_quirks;
 
diff --git a/drivers/i2c/busses/i2c-at91.h b/drivers/i2c/busses/i2c-at91.h
index 499b506f6128..b89dab55e776 100644
--- a/drivers/i2c/busses/i2c-at91.h
+++ b/drivers/i2c/busses/i2c-at91.h
@@ -141,6 +141,10 @@ struct at91_twi_dev {
 	u32 fifo_size;
 	struct at91_twi_dma dma;
 	bool slave_detected;
+	struct i2c_bus_recovery_info rinfo;
+	struct pinctrl *pinctrl;
+	struct pinctrl_state *pinctrl_pins_default;
+	struct pinctrl_state *pinctrl_pins_gpio;
 #ifdef CONFIG_I2C_AT91_SLAVE_EXPERIMENTAL
 	unsigned smr;
 	struct i2c_client *slave;
@@ -158,6 +162,10 @@ void at91_init_twi_bus_master(struct at91_twi_dev *dev);
 int at91_twi_probe_master(struct platform_device *pdev, u32 phy_addr,
 			  struct at91_twi_dev *dev);
 
+void at91_twi_prepare_recovery(struct i2c_adapter *adap);
+void at91_twi_unprepare_recovery(struct i2c_adapter *adap);
+void at91_twi_init_recovery_info(struct at91_twi_dev *dev);
+
 #ifdef CONFIG_I2C_AT91_SLAVE_EXPERIMENTAL
 void at91_init_twi_bus_slave(struct at91_twi_dev *dev);
 int at91_twi_probe_slave(struct platform_device *pdev, u32 phy_addr,
-- 
2.24.0


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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

^ permalink raw reply related	[flat|nested] 6+ messages in thread
* [PATCH 3/3] ARM: at91/dt: sama5d2: add i2c gpio pinctrl
  2019-12-05 14:03 [PATCH 0/3] SAMA5D2 i2c bus recovery testing Kamel Bouhara
  2019-12-05 14:03 ` [PATCH 1/3] dt-bindings: i2c: at91: document optional bus recovery properties Kamel Bouhara
  2019-12-05 14:03 ` [PATCH 2/3] i2c: at91: implement i2c bus recovery Kamel Bouhara
@ 2019-12-05 14:03 ` Kamel Bouhara
  2019-12-16 10:10 ` [PATCH 0/3] SAMA5D2 i2c bus recovery testing Ludovic Desroches
  3 siblings, 0 replies; 6+ messages in thread
From: Kamel Bouhara @ 2019-12-05 14:03 UTC (permalink / raw)
  To: Codrin.Ciubotariu
  Cc: Kamel Bouhara, Alexandre Belloni, Ludovic Desroches, linux-arm-kernel

Add the i2c gpio pinctrls to support the i2c bus recovery

Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
---
 arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts   | 33 +++++++++++++++++++--
 arch/arm/boot/dts/at91-sama5d2_xplained.dts | 33 +++++++++++++++++++--
 2 files changed, 60 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
index ba7f3e646c26..b3cd651ecda0 100644
--- a/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts
@@ -180,8 +180,11 @@
 
 			i2c0: i2c@f8028000 {
 				dmas = <0>, <0>;
-				pinctrl-names = "default";
+				pinctrl-names = "default", "gpio";
 				pinctrl-0 = <&pinctrl_i2c0_default>;
+				pinctrl-1 = <&pinctrl_i2c0_gpio>;
+				sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;
+				scl-gpios = <&pioA PIN_PD22 GPIO_ACTIVE_HIGH>;
 				status = "okay";
 			};
 
@@ -198,8 +201,11 @@
 					#address-cells = <1>;
 					#size-cells = <0>;
 					clocks = <&pmc PMC_TYPE_PERIPHERAL 19>;
-					pinctrl-names = "default";
+					pinctrl-names = "default", "gpio";
 					pinctrl-0 = <&pinctrl_flx0_default>;
+					pinctrl-1 = <&pinctrl_flx0_gpio>;
+					sda-gpios = <&pioA PIN_PB28 GPIO_ACTIVE_HIGH>;
+					scl-gpios = <&pioA PIN_PB29 GPIO_ACTIVE_HIGH>;
 					atmel,fifo-size = <16>;
 					status = "okay";
 				};
@@ -226,8 +232,11 @@
 
 			i2c1: i2c@fc028000 {
 				dmas = <0>, <0>;
-				pinctrl-names = "default";
+				pinctrl-names = "default", "gpio";
 				pinctrl-0 = <&pinctrl_i2c1_default>;
+				pinctrl-1 = <&pinctrl_i2c1_gpio>;
+				sda-gpios = <&pioA PIN_PC6 GPIO_ACTIVE_HIGH>;
+				scl-gpios = <&pioA PIN_PC7 GPIO_ACTIVE_HIGH>;
 				status = "okay";
 
 				at24@50 {
@@ -244,18 +253,36 @@
 					bias-disable;
 				};
 
+				pinctrl_flx0_gpio: flx0_gpio {
+					pinmux = <PIN_PB28__GPIO>,
+						 <PIN_PB29__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_i2c0_default: i2c0_default {
 					pinmux = <PIN_PD21__TWD0>,
 						 <PIN_PD22__TWCK0>;
 					bias-disable;
 				};
 
+				pinctrl_i2c0_gpio: i2c0_gpio {
+					pinmux = <PIN_PD21__GPIO>,
+						 <PIN_PD22__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_i2c1_default: i2c1_default {
 					pinmux = <PIN_PC6__TWD1>,
 						 <PIN_PC7__TWCK1>;
 					bias-disable;
 				};
 
+				pinctrl_i2c1_gpio: i2c1_gpio {
+					pinmux = <PIN_PC6__GPIO>,
+						 <PIN_PC7__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_key_gpio_default: key_gpio_default {
 					pinmux = <PIN_PA10__GPIO>;
 					bias-pull-up;
diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
index 808e399fd39a..c22e2aad87fa 100644
--- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
+++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
@@ -129,8 +129,11 @@
 
 			i2c0: i2c@f8028000 {
 				dmas = <0>, <0>;
-				pinctrl-names = "default";
+				pinctrl-names = "default", "gpio";
 				pinctrl-0 = <&pinctrl_i2c0_default>;
+				pinctrl-1 = <&pinctrl_i2c0_gpio>;
+				sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;
+				scl-gpios = <&pioA PIN_PD22 GPIO_ACTIVE_HIGH>;
 				i2c-sda-hold-time-ns = <350>;
 				status = "okay";
 
@@ -331,8 +334,11 @@
 					#address-cells = <1>;
 					#size-cells = <0>;
 					clocks = <&pmc PMC_TYPE_PERIPHERAL 23>;
-					pinctrl-names = "default";
+					pinctrl-names = "default", "gpio";
 					pinctrl-0 = <&pinctrl_flx4_default>;
+					pinctrl-1 = <&pinctrl_flx4_gpio>;
+					sda-gpios = <&pioA PIN_PD12 GPIO_ACTIVE_HIGH>;
+					scl-gpios = <&pioA PIN_PD13 GPIO_ACTIVE_HIGH>;
 					atmel,fifo-size = <16>;
 					status = "okay";
 				};
@@ -340,8 +346,11 @@
 
 			i2c1: i2c@fc028000 {
 				dmas = <0>, <0>;
-				pinctrl-names = "default";
+				pinctrl-names = "default", "gpio";
 				pinctrl-0 = <&pinctrl_i2c1_default>;
+				pinctrl-1 = <&pinctrl_i2c1_gpio>;
+				sda-gpios = <&pioA PIN_PD4 GPIO_ACTIVE_HIGH>;
+				scl-gpios = <&pioA PIN_PD5 GPIO_ACTIVE_HIGH>;
 				status = "okay";
 
 				at24@54 {
@@ -435,18 +444,36 @@
 					bias-disable;
 				};
 
+				pinctrl_flx4_gpio: flx4_gpio {
+					pinmux = <PIN_PD12__GPIO>,
+						 <PIN_PD13__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_i2c0_default: i2c0_default {
 					pinmux = <PIN_PD21__TWD0>,
 						 <PIN_PD22__TWCK0>;
 					bias-disable;
 				};
 
+				pinctrl_i2c0_gpio: i2c0_gpio {
+					pinmux = <PIN_PD21__GPIO>,
+						 <PIN_PD22__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_i2c1_default: i2c1_default {
 					pinmux = <PIN_PD4__TWD1>,
 						 <PIN_PD5__TWCK1>;
 					bias-disable;
 				};
 
+				pinctrl_i2c1_gpio: i2c1_gpio {
+					pinmux = <PIN_PD4__GPIO>,
+						 <PIN_PD5__GPIO>;
+					bias-pull-up;
+				};
+
 				pinctrl_i2s0_default: i2s0_default {
 					pinmux = <PIN_PC1__I2SC0_CK>,
 						 <PIN_PC2__I2SC0_MCK>,
-- 
2.24.0


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^ permalink raw reply related	[flat|nested] 6+ messages in thread
* Re: [PATCH 0/3] SAMA5D2 i2c bus recovery testing
  2019-12-05 14:03 [PATCH 0/3] SAMA5D2 i2c bus recovery testing Kamel Bouhara
                   ` (2 preceding siblings ...)
  2019-12-05 14:03 ` [PATCH 3/3] ARM: at91/dt: sama5d2: add i2c gpio pinctrl Kamel Bouhara
@ 2019-12-16 10:10 ` Ludovic Desroches
  2019-12-16 10:26   ` Kamel Bouhara
  3 siblings, 1 reply; 6+ messages in thread
From: Ludovic Desroches @ 2019-12-16 10:10 UTC (permalink / raw)
  To: Kamel Bouhara; +Cc: linux-arm-kernel, Codrin.Ciubotariu, Alexandre Belloni

Hi Kamel,

On Thu, Dec 05, 2019 at 03:03:02PM +0100, Kamel Bouhara wrote:
> 
> Here are the sama5d2 patches, as there is not pinmux defined in the
> dtsi. I choosed to only apply it to derivated board as the i2c
> configuration is specific for each.
> 
> Of course, it could be great if could test it on the ptc board as well.
> 

The i2c mailing list is missing, can you resend it please.

By the way, it fails to apply against next and 5.5-rc1. On which version is it
based? I assume a cherry-pick should work but git am fails.

Regards

Ludovic

> Best Regards,
> Kamel
> 
> Kamel Bouhara (3):
>   dt-bindings: i2c: at91: document optional bus recovery properties
>   i2c: at91: implement i2c bus recovery
>   ARM: at91/dt: sama5d2: add i2c gpio pinctrl
> 
>  .../devicetree/bindings/i2c/i2c-at91.txt      | 10 +++
>  arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts     | 33 +++++++++-
>  arch/arm/boot/dts/at91-sama5d2_xplained.dts   | 33 +++++++++-
>  drivers/i2c/busses/i2c-at91-master.c          | 64 +++++++++++++++++++
>  drivers/i2c/busses/i2c-at91.h                 |  8 +++
>  5 files changed, 142 insertions(+), 6 deletions(-)
> 
> --
> 2.24.0
> 

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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

^ permalink raw reply	[flat|nested] 6+ messages in thread
* Re: [PATCH 0/3] SAMA5D2 i2c bus recovery testing
  2019-12-16 10:10 ` [PATCH 0/3] SAMA5D2 i2c bus recovery testing Ludovic Desroches
@ 2019-12-16 10:26   ` Kamel Bouhara
  0 siblings, 0 replies; 6+ messages in thread
From: Kamel Bouhara @ 2019-12-16 10:26 UTC (permalink / raw)
  To: Codrin.Ciubotariu, Nicolas Ferre, Alexandre Belloni, linux-arm-kernel

On Mon, Dec 16, 2019 at 11:10:44AM +0100, Ludovic Desroches wrote:
> Hi Kamel,
>

Hi Ludovic,

> On Thu, Dec 05, 2019 at 03:03:02PM +0100, Kamel Bouhara wrote:
> >
> > Here are the sama5d2 patches, as there is not pinmux defined in the
> > dtsi. I choosed to only apply it to derivated board as the i2c
> > configuration is specific for each.
> >
> > Of course, it could be great if could test it on the ptc board as well.
> >
>
> The i2c mailing list is missing, can you resend it please.
>

Actually it was not intended to be sent to any mailing list, it is a
mail for Codrin so he can achieve some tests.

> By the way, it fails to apply against next and 5.5-rc1. On which version is it
> based? I assume a cherry-pick should work but git am fails.
>

It's based on 5.4, Im not sure it will apply on next but it should on
5.5, anyway it is a WIP here.

Best Regards,
Kamel

> Regards
>
> Ludovic
>
> > Best Regards,
> > Kamel
> >
> > Kamel Bouhara (3):
> >   dt-bindings: i2c: at91: document optional bus recovery properties
> >   i2c: at91: implement i2c bus recovery
> >   ARM: at91/dt: sama5d2: add i2c gpio pinctrl
> >
> >  .../devicetree/bindings/i2c/i2c-at91.txt      | 10 +++
> >  arch/arm/boot/dts/at91-sama5d2_ptc_ek.dts     | 33 +++++++++-
> >  arch/arm/boot/dts/at91-sama5d2_xplained.dts   | 33 +++++++++-
> >  drivers/i2c/busses/i2c-at91-master.c          | 64 +++++++++++++++++++
> >  drivers/i2c/busses/i2c-at91.h                 |  8 +++
> >  5 files changed, 142 insertions(+), 6 deletions(-)
> >
> > --
> > 2.24.0
> >

--
Kamel Bouhara, Bootlin
Embedded Linux and kernel engineering
https://bootlin.com

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^ permalink raw reply	[flat|nested] 6+ messages in thread
end of thread, other threads:[~2019-12-16 10:27 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2019-12-05 14:03 [PATCH 0/3] SAMA5D2 i2c bus recovery testing Kamel Bouhara
2019-12-05 14:03 ` [PATCH 1/3] dt-bindings: i2c: at91: document optional bus recovery properties Kamel Bouhara
2019-12-05 14:03 ` [PATCH 2/3] i2c: at91: implement i2c bus recovery Kamel Bouhara
2019-12-05 14:03 ` [PATCH 3/3] ARM: at91/dt: sama5d2: add i2c gpio pinctrl Kamel Bouhara
2019-12-16 10:10 ` [PATCH 0/3] SAMA5D2 i2c bus recovery testing Ludovic Desroches
2019-12-16 10:26   ` Kamel Bouhara

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