| Message ID | 20211221182826.2141789-1-jaschultzMS@gmail.com |
|---|---|
| Headers | show |
| Series | platform: surface: Introduce Surface XBL Driver | expand |
> -----Original Message----- > From: Rob Herring <robh@kernel.org> > Sent: Tuesday, December 21, 2021 5:24 PM > To: Jarrett Schultz <jaschultzms@gmail.com> > Cc: Andy Gross <agross@kernel.org>; bjorn.andersson@linaro.org; Hans de > Goede <hdegoede@redhat.com>; Mark Gross <markgross@kernel.org>; > Maximilian Luz <luzmaximilian@gmail.com>; Felipe Balbi > <balbi@kernel.org>; linux-arm-msm@vger.kernel.org; platform-driver- > x86@vger.kernel.org; linux-kernel@vger.kernel.org; > devicetree@vger.kernel.org; Jarrett Schultz <jaschultz@microsoft.com> > Subject: [EXTERNAL] Re: [PATCH RESEND v4 1/4] dt-bindings: platform: > microsoft: Document surface xbl > > On Tue, Dec 21, 2021 at 10:28:23AM -0800, Jarrett Schultz wrote: > > From: Jarrett Schultz <jaschultz@microsoft.com> > > > > Introduce yaml for surface xbl driver. > > > > Signed-off-by: Jarrett Schultz <jaschultz@microsoft.com> > > > > --- > > > > Changes in v4: > > - Addressed small formatting changes > > - Removed unnecessary lines > > > > --- > > > > Changes in v3: > > - Updated description to only pertain to the hardware > > - Updated the required field to properly reflect the binding > > - Removed the first example > > - Fixed the size of the reg field in the second example > > > > --- > > > > Changes in v2: > > - Removed json-schema dependence > > - Elaborated on description of driver > > - Updated example > > --- > > .../platform/microsoft/surface-xbl.yaml | 64 +++++++++++++++++++ > > MAINTAINERS | 7 ++ > > 2 files changed, 71 insertions(+) > > create mode 100644 > > Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml > > > > diff --git > > a/Documentation/devicetree/bindings/platform/microsoft/surface- > xbl.yam > > l > > b/Documentation/devicetree/bindings/platform/microsoft/surface- > xbl.yam > > l > > new file mode 100644 > > index 000000000000..df5a87a016f4 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/platform/microsoft/surface-xbl > > +++ .yaml > > @@ -0,0 +1,64 @@ > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 > > +--- > > +$id: > > > +https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi > > +cetree.org%2Fschemas%2Fplatform%2Fmicrosoft%2Fsurface- > xbl.yaml%23& > > > +;data=04%7C01%7Cjaschultz%40microsoft.com%7C77abe729b69a40624472 > 08d9c > > > +4d8f44e%7C72f988bf86f141af91ab2d7cd011db47%7C0%7C0%7C637757258 > 3887312 > > > +05%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luM > zIiLCJBTi > > > +I6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=jG0qubz122GG2s8%2B > 1ZuMCcPIa > > +33KWwPoO2VNlDySmvs%3D&reserved=0 > > +$schema: > > > +https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi > > +cetree.org%2Fmeta- > schemas%2Fcore.yaml%23&data=04%7C01%7Cjaschultz > > > +%40microsoft.com%7C77abe729b69a4062447208d9c4d8f44e%7C72f988bf8 > 6f141a > > > +f91ab2d7cd011db47%7C0%7C0%7C637757258388731205%7CUnknown%7C > TWFpbGZsb3 > > > +d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0 > %3D% > > > +7C3000&sdata=FxKNLPok9eW%2FBPmuGzU6x7dPwpnev0Ngr8epO4NA > UzA%3D& > > +;reserved=0 > > + > > +title: Surface Extensible Bootloader for Microsoft Surface Duo > > + > > +maintainers: > > + - Jarrett Schultz <jaschultz@microsoft.com> > > + > > +description: | > > + Defined to expose information that is used during production when > > + device is in manufacturing mode. Some of the information included > > + in this imem section is - > > If this is onchip sram, we have a binding for that. That's not an MFD. > > > + * board_id > > + * battery_present > > + * hw_init_retries > > + * is_customer_mode > > + * is_act_mode > > + * pmic_reset_reason > > + * touch_fw_version > > + * ocp_error_location > > nvmem binding doesn't work for describing these fields? > > > + See sysfs documentation for more information. > > sysfs? Not relevant to the binding. > > > + > > +properties: > > + compatible: > > + const: simple-mfd > > + > > + reg: > > + maxItems: 1 > > + > > +additionalProperties: false > > + > > +required: > > + - compatible > > + - reg > > + - ranges > > + - address-cells > > + - size-cells > > + > > +examples: > > + - | > > + / { > > + compatible = "foo"; > > + model = "foo"; > > No need to make this the root node with a fake compatible. I included this root node in order to make #address-cells = #size-cells = 2, since this example raises errors otherwise. > > > + #address-cells = <2>; > > + #size-cells = <2>; > > + > > + imem@146bf000 { > > + compatible = "simple-mfd"; > > + reg = <0x0 0x146bf000 0x0 0x1000>; > > + ranges = <0x0 0x0 0x146bf000 0x1000>; > > + #address-cells = <1>; > > + #size-cells = <1>; > > + status = "okay"; > > Don't show status in examples. > > > + > > + xbl@a94 { > > + compatible = "microsoft,sm8150-surface-duo-xbl"; > > + reg = <0xa94 0x100>; > > + status = "okay"; > > + }; > > + }; > > + }; > > diff --git a/MAINTAINERS b/MAINTAINERS index > > 13f9a84a617e..5d0ca2a98b57 100644 > > --- a/MAINTAINERS > > +++ b/MAINTAINERS > > @@ -12649,6 +12649,13 @@ F: Documentation/driver- > api/surface_aggregator/clients/dtx.rst > > F: drivers/platform/surface/surface_dtx.c > > F: include/uapi/linux/surface_aggregator/dtx.h > > > > +MICROSOFT SURFACE DUO XBL DRIVER > > +M: Jarrett Schultz <jaschultz@microsoft.com> > > +L: linux-arm-msm@vger.kernel.org > > +L: platform-driver-x86@vger.kernel.org > > +S: Supported > > +F: Documentation/devicetree/bindings/platform/microsoft/surface- > xbl.yaml > > + > > MICROSOFT SURFACE GPE LID SUPPORT DRIVER > > M: Maximilian Luz <luzmaximilian@gmail.com> > > L: platform-driver-x86@vger.kernel.org > > -- > > 2.25.1 > > > >
On Mon, Dec 27, 2021 at 10:54 AM Jarrett Schultz <jaschultz@microsoft.com> wrote: > > > > > -----Original Message----- > > From: Rob Herring <robh@kernel.org> > > Sent: Tuesday, December 21, 2021 5:24 PM > > To: Jarrett Schultz <jaschultzms@gmail.com> > > Cc: Andy Gross <agross@kernel.org>; bjorn.andersson@linaro.org; Hans de > > Goede <hdegoede@redhat.com>; Mark Gross <markgross@kernel.org>; > > Maximilian Luz <luzmaximilian@gmail.com>; Felipe Balbi > > <balbi@kernel.org>; linux-arm-msm@vger.kernel.org; platform-driver- > > x86@vger.kernel.org; linux-kernel@vger.kernel.org; > > devicetree@vger.kernel.org; Jarrett Schultz <jaschultz@microsoft.com> > > Subject: [EXTERNAL] Re: [PATCH RESEND v4 1/4] dt-bindings: platform: > > microsoft: Document surface xbl > > > > On Tue, Dec 21, 2021 at 10:28:23AM -0800, Jarrett Schultz wrote: > > > From: Jarrett Schultz <jaschultz@microsoft.com> > > > > > > Introduce yaml for surface xbl driver. > > > > > > Signed-off-by: Jarrett Schultz <jaschultz@microsoft.com> > > > > > > --- > > > > > > Changes in v4: > > > - Addressed small formatting changes > > > - Removed unnecessary lines > > > > > > --- > > > > > > Changes in v3: > > > - Updated description to only pertain to the hardware > > > - Updated the required field to properly reflect the binding > > > - Removed the first example > > > - Fixed the size of the reg field in the second example > > > > > > --- > > > > > > Changes in v2: > > > - Removed json-schema dependence > > > - Elaborated on description of driver > > > - Updated example > > > --- > > > .../platform/microsoft/surface-xbl.yaml | 64 +++++++++++++++++++ > > > MAINTAINERS | 7 ++ > > > 2 files changed, 71 insertions(+) > > > create mode 100644 > > > Documentation/devicetree/bindings/platform/microsoft/surface-xbl.yaml > > > > > > diff --git > > > a/Documentation/devicetree/bindings/platform/microsoft/surface- > > xbl.yam > > > l > > > b/Documentation/devicetree/bindings/platform/microsoft/surface- > > xbl.yam > > > l > > > new file mode 100644 > > > index 000000000000..df5a87a016f4 > > > --- /dev/null > > > +++ b/Documentation/devicetree/bindings/platform/microsoft/surface-xbl > > > +++ .yaml > > > @@ -0,0 +1,64 @@ > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2 > > > +--- > > > +$id: > > > > > +https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi > > > +cetree.org%2Fschemas%2Fplatform%2Fmicrosoft%2Fsurface- > > xbl.yaml%23& > > > > > +;data=04%7C01%7Cjaschultz%40microsoft.com%7C77abe729b69a40624472 > > 08d9c > > > > > +4d8f44e%7C72f988bf86f141af91ab2d7cd011db47%7C0%7C0%7C637757258 > > 3887312 > > > > > +05%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luM > > zIiLCJBTi > > > > > +I6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=jG0qubz122GG2s8%2B > > 1ZuMCcPIa > > > +33KWwPoO2VNlDySmvs%3D&reserved=0 > > > +$schema: > > > > > +https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevi > > > +cetree.org%2Fmeta- > > schemas%2Fcore.yaml%23&data=04%7C01%7Cjaschultz > > > > > +%40microsoft.com%7C77abe729b69a4062447208d9c4d8f44e%7C72f988bf8 > > 6f141a > > > > > +f91ab2d7cd011db47%7C0%7C0%7C637757258388731205%7CUnknown%7C > > TWFpbGZsb3 > > > > > +d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0 > > %3D% > > > > > +7C3000&sdata=FxKNLPok9eW%2FBPmuGzU6x7dPwpnev0Ngr8epO4NA > > UzA%3D& > > > +;reserved=0 > > > + > > > +title: Surface Extensible Bootloader for Microsoft Surface Duo > > > + > > > +maintainers: > > > + - Jarrett Schultz <jaschultz@microsoft.com> > > > + > > > +description: | > > > + Defined to expose information that is used during production when > > > + device is in manufacturing mode. Some of the information included > > > + in this imem section is - > > > > If this is onchip sram, we have a binding for that. That's not an MFD. > > > > > + * board_id > > > + * battery_present > > > + * hw_init_retries > > > + * is_customer_mode > > > + * is_act_mode > > > + * pmic_reset_reason > > > + * touch_fw_version > > > + * ocp_error_location > > > > nvmem binding doesn't work for describing these fields? > > > > > + See sysfs documentation for more information. > > > > sysfs? Not relevant to the binding. > > > > > + > > > +properties: > > > + compatible: > > > + const: simple-mfd > > > + > > > + reg: > > > + maxItems: 1 > > > + > > > +additionalProperties: false > > > + > > > +required: > > > + - compatible > > > + - reg > > > + - ranges > > > + - address-cells > > > + - size-cells > > > + > > > +examples: > > > + - | > > > + / { > > > + compatible = "foo"; > > > + model = "foo"; > > > > No need to make this the root node with a fake compatible. > > I included this root node in order to make #address-cells = #size-cells = 2, > since this example raises errors otherwise. Why does your example require 2 cells? You only have 4KB of address space. Though you can do: bus { #address-cells = <2>; #size-cells = <2>; ... }; Rob
> -----Original Message----- > From: Rob Herring <robh@kernel.org> > Sent: Monday, December 27, 2021 9:46 AM > To: Jarrett Schultz <jaschultz@microsoft.com> > Cc: Jarrett Schultz <jaschultzms@gmail.com>; Andy Gross > <agross@kernel.org>; bjorn.andersson@linaro.org; Hans de Goede > <hdegoede@redhat.com>; Mark Gross <markgross@kernel.org>; Maximilian > Luz <luzmaximilian@gmail.com>; Felipe Balbi <balbi@kernel.org>; linux-arm- > msm@vger.kernel.org; platform-driver-x86@vger.kernel.org; linux- > kernel@vger.kernel.org; devicetree@vger.kernel.org > Subject: Re: [EXTERNAL] Re: [PATCH RESEND v4 1/4] dt-bindings: platform: > microsoft: Document surface xbl > > On Mon, Dec 27, 2021 at 10:54 AM Jarrett Schultz > <jaschultz@microsoft.com> wrote: > > > > > > > > > -----Original Message----- > > > From: Rob Herring <robh@kernel.org> > > > Sent: Tuesday, December 21, 2021 5:24 PM > > > To: Jarrett Schultz <jaschultzms@gmail.com> > > > Cc: Andy Gross <agross@kernel.org>; bjorn.andersson@linaro.org; Hans > > > de Goede <hdegoede@redhat.com>; Mark Gross > <markgross@kernel.org>; > > > Maximilian Luz <luzmaximilian@gmail.com>; Felipe Balbi > > > <balbi@kernel.org>; linux-arm-msm@vger.kernel.org; platform-driver- > > > x86@vger.kernel.org; linux-kernel@vger.kernel.org; > > > devicetree@vger.kernel.org; Jarrett Schultz > > > <jaschultz@microsoft.com> > > > Subject: [EXTERNAL] Re: [PATCH RESEND v4 1/4] dt-bindings: platform: > > > microsoft: Document surface xbl > > > > > > On Tue, Dec 21, 2021 at 10:28:23AM -0800, Jarrett Schultz wrote: > > > > From: Jarrett Schultz <jaschultz@microsoft.com> > > > > > > > > Introduce yaml for surface xbl driver. > > > > > > > > Signed-off-by: Jarrett Schultz <jaschultz@microsoft.com> > > > > > > > > --- > > > > > > > > Changes in v4: > > > > - Addressed small formatting changes > > > > - Removed unnecessary lines > > > > > > > > --- > > > > > > > > Changes in v3: > > > > - Updated description to only pertain to the hardware > > > > - Updated the required field to properly reflect the binding > > > > - Removed the first example > > > > - Fixed the size of the reg field in the second example > > > > > > > > --- > > > > > > > > Changes in v2: > > > > - Removed json-schema dependence > > > > - Elaborated on description of driver > > > > - Updated example > > > > --- > > > > .../platform/microsoft/surface-xbl.yaml | 64 +++++++++++++++++++ > > > > MAINTAINERS | 7 ++ > > > > 2 files changed, 71 insertions(+) create mode 100644 > > > > Documentation/devicetree/bindings/platform/microsoft/surface-xbl.y > > > > aml > > > > > > > > diff --git > > > > a/Documentation/devicetree/bindings/platform/microsoft/surface- > > > xbl.yam > > > > l > > > > b/Documentation/devicetree/bindings/platform/microsoft/surface- > > > xbl.yam > > > > l > > > > new file mode 100644 > > > > index 000000000000..df5a87a016f4 > > > > --- /dev/null > > > > +++ b/Documentation/devicetree/bindings/platform/microsoft/surface > > > > +++ -xbl > > > > +++ .yaml > > > > @@ -0,0 +1,64 @@ > > > > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML > > > > +1.2 > > > > +--- > > > > +$id: > > > > > > > > +https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fde > > > +vi > > > > +cetree.org%2Fschemas%2Fplatform%2Fmicrosoft%2Fsurface- > > > xbl.yaml%23& > > > > > > > > +;data=04%7C01%7Cjaschultz%40microsoft.com%7C77abe729b69a40624472 > > > 08d9c > > > > > > > > +4d8f44e%7C72f988bf86f141af91ab2d7cd011db47%7C0%7C0%7C637757258 > > > 3887312 > > > > > > > > +05%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luM > > > zIiLCJBTi > > > > > > > > +I6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=jG0qubz122GG2s8%2B > > > 1ZuMCcPIa > > > > +33KWwPoO2VNlDySmvs%3D&reserved=0 > > > > +$schema: > > > > > > > > +https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fde > > > +vi > > > > +cetree.org%2Fmeta- > > > schemas%2Fcore.yaml%23&data=04%7C01%7Cjaschultz > > > > > > > > +%40microsoft.com%7C77abe729b69a4062447208d9c4d8f44e%7C72f988bf8 > > > 6f141a > > > > > > > > +f91ab2d7cd011db47%7C0%7C0%7C637757258388731205%7CUnknown%7C > > > TWFpbGZsb3 > > > > > > > > +d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0 > > > %3D% > > > > > > > > +7C3000&sdata=FxKNLPok9eW%2FBPmuGzU6x7dPwpnev0Ngr8epO4NA > > > UzA%3D& > > > > +;reserved=0 > > > > + > > > > +title: Surface Extensible Bootloader for Microsoft Surface Duo > > > > + > > > > +maintainers: > > > > + - Jarrett Schultz <jaschultz@microsoft.com> > > > > + > > > > +description: | > > > > + Defined to expose information that is used during production > > > > +when > > > > + device is in manufacturing mode. Some of the information > > > > +included > > > > + in this imem section is - > > > > > > If this is onchip sram, we have a binding for that. That's not an MFD. > > > > > > > + * board_id > > > > + * battery_present > > > > + * hw_init_retries > > > > + * is_customer_mode > > > > + * is_act_mode > > > > + * pmic_reset_reason > > > > + * touch_fw_version > > > > + * ocp_error_location > > > > > > nvmem binding doesn't work for describing these fields? > > > > > > > + See sysfs documentation for more information. > > > > > > sysfs? Not relevant to the binding. > > > > > > > + > > > > +properties: > > > > + compatible: > > > > + const: simple-mfd > > > > + > > > > + reg: > > > > + maxItems: 1 > > > > + > > > > +additionalProperties: false > > > > + > > > > +required: > > > > + - compatible > > > > + - reg > > > > + - ranges > > > > + - address-cells > > > > + - size-cells > > > > + > > > > +examples: > > > > + - | > > > > + / { > > > > + compatible = "foo"; > > > > + model = "foo"; > > > > > > No need to make this the root node with a fake compatible. > > > > I included this root node in order to make #address-cells = > > #size-cells = 2, since this example raises errors otherwise. > > Why does your example require 2 cells? You only have 4KB of address space. The soc node that imem sits under in sm8150.dtsi defines it that way so for continuity I figured that it would make sense for the example to mirror that. Also, should imem and xbl be documented in separate files? > > Though you can do: > > bus { > #address-cells = <2>; > #size-cells = <2>; > ... > }; > > Rob
Rob Herring wrote: > From: Rob Herring <robh@kernel.org> > > On Tue, Dec 21, 2021 at 10:28:23AM -0800, Jarrett Schultz wrote: > > From: Jarrett Schultz <jaschultz@microsoft.com> > > > > +title: Surface Extensible Bootloader for Microsoft Surface Duo > > + > > +maintainers: > > + - Jarrett Schultz <jaschultz@microsoft.com> > > + > > +description: | > > + Defined to expose information that is used during production when > > + device is in manufacturing mode. Some of the information included > > + in this imem section is - > > If this is onchip sram, we have a binding for that. That's not an MFD. I now have this driver working with nvmem, but I could not find the binding that you are talking about here. Could you point me to the binding? Thanks, Jarrett > > > + * board_id > > + * battery_present > > + * hw_init_retries > > + * is_customer_mode > > + * is_act_mode > > + * pmic_reset_reason > > + * touch_fw_version > > + * ocp_error_location > > nvmem binding doesn't work for describing these fields? > > > + See sysfs documentation for more information. > > sysfs? Not relevant to the binding. > > > + > > +properties: > > + compatible: > > + const: simple-mfd > > + > > + reg: > > + maxItems: 1 > > + > > +additionalProperties: false > > + > > +required: > > + - compatible > > + - reg > > + - ranges > > + - address-cells > > + - size-cells > > + > > +examples: > > + - | > > + / { > > + compatible = "foo"; > > + model = "foo"; > > No need to make this the root node with a fake compatible. > > > + #address-cells = <2>; > > + #size-cells = <2>; > > + > > + imem@146bf000 { > > + compatible = "simple-mfd"; > > + reg = <0x0 0x146bf000 0x0 0x1000>; > > + ranges = <0x0 0x0 0x146bf000 0x1000>; > > + #address-cells = <1>; > > + #size-cells = <1>; > > + status = "okay"; > > Don't show status in examples. > > > + > > + xbl@a94 { > > + compatible = "microsoft,sm8150-surface-duo-xbl"; > > + reg = <0xa94 0x100>; > > + status = "okay"; > > + }; > > + }; > > + }; > > diff --git a/MAINTAINERS b/MAINTAINERS index > > 13f9a84a617e..5d0ca2a98b57 100644 > > --- a/MAINTAINERS > > +++ b/MAINTAINERS > > @@ -12649,6 +12649,13 @@ F: Documentation/driver- > api/surface_aggregator/clients/dtx.rst > > F: drivers/platform/surface/surface_dtx.c > > F: include/uapi/linux/surface_aggregator/dtx.h > > > > +MICROSOFT SURFACE DUO XBL DRIVER > > +M: Jarrett Schultz <jaschultz@microsoft.com> > > +L: linux-arm-msm@vger.kernel.org > > +L: platform-driver-x86@vger.kernel.org > > +S: Supported > > +F: Documentation/devicetree/bindings/platform/microsoft/surface- > xbl.yaml > > + > > MICROSOFT SURFACE GPE LID SUPPORT DRIVER > > M: Maximilian Luz <luzmaximilian@gmail.com> > > L: platform-driver-x86@vger.kernel.org > > -- > > 2.25.1 > > > >
On Tuesday, February 15, 2022 8:39 AM, Bjorn Andersson > > On Mon 14 Feb 19:04 CST 2022, Jarrett Schultz wrote: > > > Jarrett Schultz wrote: > > > From: Jarrett Schultz > > > > > > Rob Herring wrote: > > > > From: Rob Herring <robh@kernel.org> > > > > > > > > On Tue, Dec 21, 2021 at 10:28:23AM -0800, Jarrett Schultz wrote: > > > > > From: Jarrett Schultz <jaschultz@microsoft.com> > > > > > > > > > > +title: Surface Extensible Bootloader for Microsoft Surface Duo > > > > > + > > > > > +maintainers: > > > > > + - Jarrett Schultz <jaschultz@microsoft.com> > > > > > + > > > > > +description: | > > > > > + Defined to expose information that is used during production > > > > > +when > > > > > + device is in manufacturing mode. Some of the information > > > > > +included > > > > > + in this imem section is - > > > > > > > > If this is onchip sram, we have a binding for that. That's not an MFD. > > > > > > I now have this driver working with nvmem, but I could not find the > > > binding that you are talking about here. Could you point me to the > binding? > > > > > > Thanks, > > > Jarrett > > > > > > > Rob, > > > > I followed up with my team members who have let me know that this lies > > in DDR rather than SRAM. Could you please point me to the correct > > binding to use? > > > > It might be DDR, but it's on-chip and the memory region that you describe is > a region within "imem" - something used for various purposes by Qualcomm, > presumably also in your device. Unfortunately we haven't specified a binding > for "imem", only some of its regions. > > Perhaps it would be appropriate to express the entire imem as nvmem, in > addition to the region-specific logic, if that suits you. > > Regards, > Bjorn Bjorn et al., This xbl driver was meant to be something simple and the intent was to merge it into the tree with an existing structure. Your suggestion makes sense, and I believe that it could be implemented as a separate patch after this patch with the initial xbl driver has been accepted and merged. Please let me know what you think, Jarrett Schultz > > > Thanks, > > Jarrett > > > > > > > > > > > + * board_id > > > > > + * battery_present > > > > > + * hw_init_retries > > > > > + * is_customer_mode > > > > > + * is_act_mode > > > > > + * pmic_reset_reason > > > > > + * touch_fw_version > > > > > + * ocp_error_location > > > > > > > > nvmem binding doesn't work for describing these fields? > > > > > > > > > + See sysfs documentation for more information. > > > > > > > > sysfs? Not relevant to the binding. > > > > > > > > > + > > > > > +properties: > > > > > + compatible: > > > > > + const: simple-mfd > > > > > + > > > > > + reg: > > > > > + maxItems: 1 > > > > > + > > > > > +additionalProperties: false > > > > > + > > > > > +required: > > > > > + - compatible > > > > > + - reg > > > > > + - ranges > > > > > + - address-cells > > > > > + - size-cells > > > > > + > > > > > +examples: > > > > > + - | > > > > > + / { > > > > > + compatible = "foo"; > > > > > + model = "foo"; > > > > > > > > No need to make this the root node with a fake compatible. > > > > > > > > > + #address-cells = <2>; > > > > > + #size-cells = <2>; > > > > > + > > > > > + imem@146bf000 { > > > > > + compatible = "simple-mfd"; > > > > > + reg = <0x0 0x146bf000 0x0 0x1000>; > > > > > + ranges = <0x0 0x0 0x146bf000 0x1000>; > > > > > + #address-cells = <1>; > > > > > + #size-cells = <1>; > > > > > + status = "okay"; > > > > > > > > Don't show status in examples. > > > > > > > > > + > > > > > + xbl@a94 { > > > > > + compatible = "microsoft,sm8150-surface-duo-xbl"; > > > > > + reg = <0xa94 0x100>; > > > > > + status = "okay"; > > > > > + }; > > > > > + }; > > > > > + }; > > > > > diff --git a/MAINTAINERS b/MAINTAINERS index > > > > > 13f9a84a617e..5d0ca2a98b57 100644 > > > > > --- a/MAINTAINERS > > > > > +++ b/MAINTAINERS > > > > > @@ -12649,6 +12649,13 @@ F: Documentation/driver- > > > > api/surface_aggregator/clients/dtx.rst > > > > > F: drivers/platform/surface/surface_dtx.c > > > > > F: include/uapi/linux/surface_aggregator/dtx.h > > > > > > > > > > +MICROSOFT SURFACE DUO XBL DRIVER > > > > > +M: Jarrett Schultz <jaschultz@microsoft.com> > > > > > +L: linux-arm-msm@vger.kernel.org > > > > > +L: platform-driver-x86@vger.kernel.org > > > > > +S: Supported > > > > > +F: > Documentation/devicetree/bindings/platform/microsoft/surface- > > > > xbl.yaml > > > > > + > > > > > MICROSOFT SURFACE GPE LID SUPPORT DRIVER > > > > > M: Maximilian Luz <luzmaximilian@gmail.com> > > > > > L: platform-driver-x86@vger.kernel.org > > > > > -- > > > > > 2.25.1 > > > > > > > > > >