From mboxrd@z Thu Jan 1 00:00:00 1970 From: marcel.ziswiler@toradex.com (Marcel Ziswiler) Date: Tue, 27 Sep 2016 06:28:43 +0000 Subject: [PATCH v2 1/3] ARM: dts: imx6qdl-apalis: Do not rely on DDC I2C bus bitbang for HDMI In-Reply-To: <2263d508999ada9476268138b2922702eb50131f.1474260360.git.maitysanchayan@gmail.com> References: <2263d508999ada9476268138b2922702eb50131f.1474260360.git.maitysanchayan@gmail.com> Message-ID: <1474957723.3739.3.camel@toradex.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Mon, 2016-09-19 at 10:41 +0530, Sanchayan Maity wrote: > Remove the use of DDC I2C bus bitbang to support reading of EDID > and rely on support from internal HDMI I2C master controller instead. > As a result remove the device tree property ddc-i2c-bus. > > Signed-off-by: Sanchayan Maity Acked-by: Marcel Ziswiler > --- > Changes since v1: > > Change the ranking in i2c aliases > > v1: https://lkml.org/lkml/2016/9/14/55 > --- > ?arch/arm/boot/dts/imx6q-apalis-ixora.dts | 12 +++--------- > ?arch/arm/boot/dts/imx6qdl-apalis.dtsi????| 25 +++++++++------------- > --- > ?2 files changed, 12 insertions(+), 25 deletions(-) > > diff --git a/arch/arm/boot/dts/imx6q-apalis-ixora.dts > b/arch/arm/boot/dts/imx6q-apalis-ixora.dts > index 207b85b..82b81e0 100644 > --- a/arch/arm/boot/dts/imx6q-apalis-ixora.dts > +++ b/arch/arm/boot/dts/imx6q-apalis-ixora.dts > @@ -55,10 +55,9 @@ > ? ?????"fsl,imx6q"; > ? > ? aliases { > - i2c0 = &i2cddc; > - i2c1 = &i2c1; > - i2c2 = &i2c2; > - i2c3 = &i2c3; > + i2c0 = &i2c1; > + i2c1 = &i2c2; > + i2c2 = &i2c3; > ? }; > ? > ? aliases { > @@ -186,11 +185,6 @@ > ?}; > ? > ?&hdmi { > - ddc-i2c-bus = <&i2cddc>; > - status = "okay"; > -}; > - > -&i2cddc { > ? status = "okay"; > ?}; > ? > diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi > b/arch/arm/boot/dts/imx6qdl-apalis.dtsi > index 99e323b..8c67dd8 100644 > --- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi > +++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi > @@ -53,18 +53,6 @@ > ? status = "disabled"; > ? }; > ? > - /* DDC_I2C: I2C2_SDA/SCL on MXM3 205/207 */ > - i2cddc: i2c at 0 { > - compatible = "i2c-gpio"; > - pinctrl-names = "default"; > - pinctrl-0 = <&pinctrl_i2c_ddc>; > - gpios = <&gpio3 16 GPIO_ACTIVE_HIGH /* sda */ > - ?&gpio2 30 GPIO_ACTIVE_HIGH /* scl */ > - >; > - i2c-gpio,delay-us = <2>; /* ~100 kHz */ > - status = "disabled"; > - }; > - > ? reg_1p8v: regulator-1p8v { > ? compatible = "regulator-fixed"; > ? regulator-name = "1P8V"; > @@ -209,6 +197,12 @@ > ? }; > ?}; > ? > +&hdmi { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_hdmi_ddc>; > + status = "disabled"; > +}; > + > ?/* > ? * GEN1_I2C: I2C1_SDA/SCL on MXM3 209/211 (e.g. RTC on carrier > ? * board) > @@ -633,11 +627,10 @@ > ? >; > ? }; > ? > - pinctrl_i2c_ddc: gpioi2cddcgrp { > + pinctrl_hdmi_ddc: hdmiddcgrp { > ? fsl,pins = < > - /* DDC bitbang */ > - MX6QDL_PAD_EIM_EB2__GPIO2_IO30 0x1b0b0 > - MX6QDL_PAD_EIM_D16__GPIO3_IO16 0x1b0b0 > + MX6QDL_PAD_EIM_EB2__HDMI_TX_DDC_SCL > 0x4001b8b1 > + MX6QDL_PAD_EIM_D16__HDMI_TX_DDC_SDA > 0x4001b8b1 > ? >; > ? }; From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcel Ziswiler Subject: Re: [PATCH v2 1/3] ARM: dts: imx6qdl-apalis: Do not rely on DDC I2C bus bitbang for HDMI Date: Tue, 27 Sep 2016 06:28:43 +0000 Message-ID: <1474957723.3739.3.camel@toradex.com> References: <2263d508999ada9476268138b2922702eb50131f.1474260360.git.maitysanchayan@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <2263d508999ada9476268138b2922702eb50131f.1474260360.git.maitysanchayan@gmail.com> Content-Language: en-US Content-ID: <0DC1F18BD985CF49BD865C41CAD7CA02@eurprd05.prod.outlook.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org To: "shawnguo@kernel.org" , "maitysanchayan@gmail.com" Cc: "devicetree@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" , "stefan@agner.ch" , "linux-kernel@vger.kernel.org" List-Id: devicetree@vger.kernel.org T24gTW9uLCAyMDE2LTA5LTE5IGF0IDEwOjQxICswNTMwLCBTYW5jaGF5YW4gTWFpdHkgd3JvdGU6 DQo+IFJlbW92ZSB0aGUgdXNlIG9mIEREQyBJMkMgYnVzIGJpdGJhbmcgdG8gc3VwcG9ydCByZWFk aW5nIG9mIEVESUQNCj4gYW5kIHJlbHkgb24gc3VwcG9ydCBmcm9tIGludGVybmFsIEhETUkgSTJD IG1hc3RlciBjb250cm9sbGVyIGluc3RlYWQuDQo+IEFzIGEgcmVzdWx0IHJlbW92ZSB0aGUgZGV2 aWNlIHRyZWUgcHJvcGVydHkgZGRjLWkyYy1idXMuDQo+IA0KPiBTaWduZWQtb2ZmLWJ5OiBTYW5j aGF5YW4gTWFpdHkgPG1haXR5c2FuY2hheWFuQGdtYWlsLmNvbT4NCg0KQWNrZWQtYnk6IE1hcmNl bCBaaXN3aWxlciA8bWFyY2VsLnppc3dpbGVyQHRvcmFkZXguY29tPg0KDQo+IC0tLQ0KPiBDaGFu Z2VzIHNpbmNlIHYxOg0KPiANCj4gQ2hhbmdlIHRoZSByYW5raW5nIGluIGkyYyBhbGlhc2VzDQo+ IA0KPiB2MTogaHR0cHM6Ly9sa21sLm9yZy9sa21sLzIwMTYvOS8xNC81NQ0KPiAtLS0NCj4gwqBh cmNoL2FybS9ib290L2R0cy9pbXg2cS1hcGFsaXMtaXhvcmEuZHRzIHwgMTIgKysrLS0tLS0tLS0t DQo+IMKgYXJjaC9hcm0vYm9vdC9kdHMvaW14NnFkbC1hcGFsaXMuZHRzacKgwqDCoMKgfCAyNSAr KysrKysrKystLS0tLS0tLS0tLS0tDQo+IC0tLQ0KPiDCoDIgZmlsZXMgY2hhbmdlZCwgMTIgaW5z ZXJ0aW9ucygrKSwgMjUgZGVsZXRpb25zKC0pDQo+IA0KPiBkaWZmIC0tZ2l0IGEvYXJjaC9hcm0v Ym9vdC9kdHMvaW14NnEtYXBhbGlzLWl4b3JhLmR0cw0KPiBiL2FyY2gvYXJtL2Jvb3QvZHRzL2lt eDZxLWFwYWxpcy1peG9yYS5kdHMNCj4gaW5kZXggMjA3Yjg1Yi4uODJiODFlMCAxMDA2NDQNCj4g LS0tIGEvYXJjaC9hcm0vYm9vdC9kdHMvaW14NnEtYXBhbGlzLWl4b3JhLmR0cw0KPiArKysgYi9h cmNoL2FybS9ib290L2R0cy9pbXg2cS1hcGFsaXMtaXhvcmEuZHRzDQo+IEBAIC01NSwxMCArNTUs OSBAQA0KPiDCoAkJwqDCoMKgwqDCoCJmc2wsaW14NnEiOw0KPiDCoA0KPiDCoAlhbGlhc2VzIHsN Cj4gLQkJaTJjMCA9ICZpMmNkZGM7DQo+IC0JCWkyYzEgPSAmaTJjMTsNCj4gLQkJaTJjMiA9ICZp MmMyOw0KPiAtCQlpMmMzID0gJmkyYzM7DQo+ICsJCWkyYzAgPSAmaTJjMTsNCj4gKwkJaTJjMSA9 ICZpMmMyOw0KPiArCQlpMmMyID0gJmkyYzM7DQo+IMKgCX07DQo+IMKgDQo+IMKgCWFsaWFzZXMg ew0KPiBAQCAtMTg2LDExICsxODUsNiBAQA0KPiDCoH07DQo+IMKgDQo+IMKgJmhkbWkgew0KPiAt CWRkYy1pMmMtYnVzID0gPCZpMmNkZGM+Ow0KPiAtCXN0YXR1cyA9ICJva2F5IjsNCj4gLX07DQo+ IC0NCj4gLSZpMmNkZGMgew0KPiDCoAlzdGF0dXMgPSAib2theSI7DQo+IMKgfTsNCj4gwqANCj4g ZGlmZiAtLWdpdCBhL2FyY2gvYXJtL2Jvb3QvZHRzL2lteDZxZGwtYXBhbGlzLmR0c2kNCj4gYi9h cmNoL2FybS9ib290L2R0cy9pbXg2cWRsLWFwYWxpcy5kdHNpDQo+IGluZGV4IDk5ZTMyM2IuLjhj NjdkZDggMTAwNjQ0DQo+IC0tLSBhL2FyY2gvYXJtL2Jvb3QvZHRzL2lteDZxZGwtYXBhbGlzLmR0 c2kNCj4gKysrIGIvYXJjaC9hcm0vYm9vdC9kdHMvaW14NnFkbC1hcGFsaXMuZHRzaQ0KPiBAQCAt NTMsMTggKzUzLDYgQEANCj4gwqAJCXN0YXR1cyA9ICJkaXNhYmxlZCI7DQo+IMKgCX07DQo+IMKg DQo+IC0JLyogRERDX0kyQzogSTJDMl9TREEvU0NMIG9uIE1YTTMgMjA1LzIwNyAqLw0KPiAtCWky Y2RkYzogaTJjQDAgew0KPiAtCQljb21wYXRpYmxlID0gImkyYy1ncGlvIjsNCj4gLQkJcGluY3Ry bC1uYW1lcyA9ICJkZWZhdWx0IjsNCj4gLQkJcGluY3RybC0wID0gPCZwaW5jdHJsX2kyY19kZGM+ Ow0KPiAtCQlncGlvcyA9IDwmZ3BpbzMgMTYgR1BJT19BQ1RJVkVfSElHSCAvKiBzZGEgKi8NCj4g LQkJCcKgJmdwaW8yIDMwIEdQSU9fQUNUSVZFX0hJR0ggLyogc2NsICovDQo+IC0JCQk+Ow0KPiAt CQlpMmMtZ3BpbyxkZWxheS11cyA9IDwyPjsJLyogfjEwMCBrSHogKi8NCj4gLQkJc3RhdHVzID0g ImRpc2FibGVkIjsNCj4gLQl9Ow0KPiAtDQo+IMKgCXJlZ18xcDh2OiByZWd1bGF0b3ItMXA4diB7 DQo+IMKgCQljb21wYXRpYmxlID0gInJlZ3VsYXRvci1maXhlZCI7DQo+IMKgCQlyZWd1bGF0b3It bmFtZSA9ICIxUDhWIjsNCj4gQEAgLTIwOSw2ICsxOTcsMTIgQEANCj4gwqAJfTsNCj4gwqB9Ow0K PiDCoA0KPiArJmhkbWkgew0KPiArCXBpbmN0cmwtbmFtZXMgPSAiZGVmYXVsdCI7DQo+ICsJcGlu Y3RybC0wID0gPCZwaW5jdHJsX2hkbWlfZGRjPjsNCj4gKwlzdGF0dXMgPSAiZGlzYWJsZWQiOw0K PiArfTsNCj4gKw0KPiDCoC8qDQo+IMKgICogR0VOMV9JMkM6IEkyQzFfU0RBL1NDTCBvbiBNWE0z IDIwOS8yMTEgKGUuZy4gUlRDIG9uIGNhcnJpZXINCj4gwqAgKiBib2FyZCkNCj4gQEAgLTYzMywx MSArNjI3LDEwIEBADQo+IMKgCQk+Ow0KPiDCoAl9Ow0KPiDCoA0KPiAtCXBpbmN0cmxfaTJjX2Rk YzogZ3Bpb2kyY2RkY2dycCB7DQo+ICsJcGluY3RybF9oZG1pX2RkYzogaGRtaWRkY2dycCB7DQo+ IMKgCQlmc2wscGlucyA9IDwNCj4gLQkJCS8qIEREQyBiaXRiYW5nICovDQo+IC0JCQlNWDZRRExf UEFEX0VJTV9FQjJfX0dQSU8yX0lPMzAgMHgxYjBiMA0KPiAtCQkJTVg2UURMX1BBRF9FSU1fRDE2 X19HUElPM19JTzE2IDB4MWIwYjANCj4gKwkJCU1YNlFETF9QQURfRUlNX0VCMl9fSERNSV9UWF9E RENfU0NMDQo+IDB4NDAwMWI4YjENCj4gKwkJCU1YNlFETF9QQURfRUlNX0QxNl9fSERNSV9UWF9E RENfU0RBDQo+IDB4NDAwMWI4YjENCj4gwqAJCT47DQo+IMKgCX07Cl9fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBs aXN0CmxpbnV4LWFybS1rZXJuZWxAbGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5m cmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932180AbcI0HCf (ORCPT ); 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spamdiagnosticoutput: 1:99 spamdiagnosticmetadata: NSPM Content-Type: text/plain; charset="utf-8" Content-ID: <0DC1F18BD985CF49BD865C41CAD7CA02@eurprd05.prod.outlook.com> MIME-Version: 1.0 X-OriginatorOrg: toradex.com X-MS-Exchange-CrossTenant-originalarrivaltime: 27 Sep 2016 06:28:43.6417 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: d9995866-0d9b-4251-8315-093f062abab4 X-MS-Exchange-Transport-CrossTenantHeadersStamped: HE1PR05MB1882 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id u8R72ioU006831 On Mon, 2016-09-19 at 10:41 +0530, Sanchayan Maity wrote: > Remove the use of DDC I2C bus bitbang to support reading of EDID > and rely on support from internal HDMI I2C master controller instead. > As a result remove the device tree property ddc-i2c-bus. > > Signed-off-by: Sanchayan Maity Acked-by: Marcel Ziswiler > --- > Changes since v1: > > Change the ranking in i2c aliases > > v1: https://lkml.org/lkml/2016/9/14/55 > --- >  arch/arm/boot/dts/imx6q-apalis-ixora.dts | 12 +++--------- >  arch/arm/boot/dts/imx6qdl-apalis.dtsi    | 25 +++++++++------------- > --- >  2 files changed, 12 insertions(+), 25 deletions(-) > > diff --git a/arch/arm/boot/dts/imx6q-apalis-ixora.dts > b/arch/arm/boot/dts/imx6q-apalis-ixora.dts > index 207b85b..82b81e0 100644 > --- a/arch/arm/boot/dts/imx6q-apalis-ixora.dts > +++ b/arch/arm/boot/dts/imx6q-apalis-ixora.dts > @@ -55,10 +55,9 @@ >        "fsl,imx6q"; >   >   aliases { > - i2c0 = &i2cddc; > - i2c1 = &i2c1; > - i2c2 = &i2c2; > - i2c3 = &i2c3; > + i2c0 = &i2c1; > + i2c1 = &i2c2; > + i2c2 = &i2c3; >   }; >   >   aliases { > @@ -186,11 +185,6 @@ >  }; >   >  &hdmi { > - ddc-i2c-bus = <&i2cddc>; > - status = "okay"; > -}; > - > -&i2cddc { >   status = "okay"; >  }; >   > diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi > b/arch/arm/boot/dts/imx6qdl-apalis.dtsi > index 99e323b..8c67dd8 100644 > --- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi > +++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi > @@ -53,18 +53,6 @@ >   status = "disabled"; >   }; >   > - /* DDC_I2C: I2C2_SDA/SCL on MXM3 205/207 */ > - i2cddc: i2c@0 { > - compatible = "i2c-gpio"; > - pinctrl-names = "default"; > - pinctrl-0 = <&pinctrl_i2c_ddc>; > - gpios = <&gpio3 16 GPIO_ACTIVE_HIGH /* sda */ > -  &gpio2 30 GPIO_ACTIVE_HIGH /* scl */ > - >; > - i2c-gpio,delay-us = <2>; /* ~100 kHz */ > - status = "disabled"; > - }; > - >   reg_1p8v: regulator-1p8v { >   compatible = "regulator-fixed"; >   regulator-name = "1P8V"; > @@ -209,6 +197,12 @@ >   }; >  }; >   > +&hdmi { > + pinctrl-names = "default"; > + pinctrl-0 = <&pinctrl_hdmi_ddc>; > + status = "disabled"; > +}; > + >  /* >   * GEN1_I2C: I2C1_SDA/SCL on MXM3 209/211 (e.g. RTC on carrier >   * board) > @@ -633,11 +627,10 @@ >   >; >   }; >   > - pinctrl_i2c_ddc: gpioi2cddcgrp { > + pinctrl_hdmi_ddc: hdmiddcgrp { >   fsl,pins = < > - /* DDC bitbang */ > - MX6QDL_PAD_EIM_EB2__GPIO2_IO30 0x1b0b0 > - MX6QDL_PAD_EIM_D16__GPIO3_IO16 0x1b0b0 > + MX6QDL_PAD_EIM_EB2__HDMI_TX_DDC_SCL > 0x4001b8b1 > + MX6QDL_PAD_EIM_D16__HDMI_TX_DDC_SDA > 0x4001b8b1 >   >; >   };