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[v6,0/3] Add DTS for SDM845 SoC and MTP

Message ID 20180312080656.13247-1-rnayak@codeaurora.org
Headers show
Series Add DTS for SDM845 SoC and MTP | expand

Message

Rajendra Nayak March 12, 2018, 8:06 a.m. UTC 
These are basic device tree files needed to boot a SDM845 MTP
board to a ramfs based serial console shell

Bindings are based on whats proposed for pinctrl/serial/clock
drivers for SDM845 SoC
pinctrl: https://patchwork.kernel.org/patch/10157143/ (This is now pulled
in by Linus Walleij for 4.17)
clocks: https://lkml.org/lkml/2018/1/31/209 (under review)

I have dropped the patch that adds the serial/geni nodes from v6, as that
will be reposted along with the geni patch series by Karthik

Since 'PATCH 3/3' also adds an ITS node and keeps it disabled, we also depend
on https://lkml.org/lkml/2018/1/29/383

Andy, since we aren't adding anything new for clocks (gcc) and pinctrl,
do these look good to be pulled in for 4.17?

changes in v6:
* added the missing power-domain-cells property for gcc as reported
by Doug Anderson 
* Dropped the patch which added geni/serial nodes in dts. Karthik has
agreed to carry that patch along with his GENI series. 

changes in v5:
* Removed all instances of IRQ_TYPE_NONE

changes in v4:
* pull config changes to uart pins
* License in device tree files is still GPL-2.0

changes in v3:
* split the pinmux/pinconf nodes across SoC/Board files
* Fixes for issues reported with 'make dtbs W=2'
* other minor fixes based on review
 
changes in v2:
* dropped cpu-map
* dropped GIC_CPU_MASK_SIMPLE()
* Added new cpu compatible for kryo385
* added ITS node, marked as disabled

Rajendra Nayak (3):
  dt-bindings: arm: Document kryo385 cpu
  dt-bindings: qcom: Add SDM845 bindings
  arm64: dts: sdm845: Add minimal dts/dtsi files for sdm845 SoC and MTP

 Documentation/devicetree/bindings/arm/cpus.txt |   1 +
 Documentation/devicetree/bindings/arm/qcom.txt |   1 +
 arch/arm64/boot/dts/qcom/Makefile              |   1 +
 arch/arm64/boot/dts/qcom/sdm845-mtp.dts        |  15 ++
 arch/arm64/boot/dts/qcom/sdm845.dtsi           | 278 +++++++++++++++++++++++++
 5 files changed, 296 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sdm845-mtp.dts
 create mode 100644 arch/arm64/boot/dts/qcom/sdm845.dtsi

Comments

Marc Zyngier March 12, 2018, 11:29 a.m. UTC | #1 
On 12/03/18 08:06, Rajendra Nayak wrote:
> Add a skeletal sdm845 SoC dtsi and MTP board dts/dtsi files
> 
> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
> Reviewed-by: Doug Anderson <dianders@chromium.org>
> ---
>  arch/arm64/boot/dts/qcom/Makefile       |   1 +
>  arch/arm64/boot/dts/qcom/sdm845-mtp.dts |  15 ++
>  arch/arm64/boot/dts/qcom/sdm845.dtsi    | 278 ++++++++++++++++++++++++++++++++
>  3 files changed, 294 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/sdm845-mtp.dts
>  create mode 100644 arch/arm64/boot/dts/qcom/sdm845.dtsi
> 
> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
> index 55ec5ee7f7e8..9319e74b8906 100644
> --- a/arch/arm64/boot/dts/qcom/Makefile
> +++ b/arch/arm64/boot/dts/qcom/Makefile
> @@ -6,3 +6,4 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-mtp.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-bullhead-rev-101.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8994-angler-rev-101.dtb
>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8996-mtp.dtb
> +dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-mtp.dtb
> diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
> new file mode 100644
> index 000000000000..979ab49913f1
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
> @@ -0,0 +1,15 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/*
> + * SDM845 MTP board device tree source
> + *
> + * Copyright (c) 2018, The Linux Foundation. All rights reserved.
> + */
> +
> +/dts-v1/;
> +
> +#include "sdm845.dtsi"
> +
> +/ {
> +	model = "Qualcomm Technologies, Inc. SDM845 MTP";
> +	compatible = "qcom,sdm845-mtp";
> +};
> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> new file mode 100644
> index 000000000000..d2407cd7a561
> --- /dev/null
> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi

[...]

> +		intc: interrupt-controller@17a00000 {
> +			compatible = "arm,gic-v3";
> +			#address-cells = <1>;
> +			#size-cells = <1>;
> +			ranges;
> +			#interrupt-cells = <3>;
> +			interrupt-controller;
> +			#redistributor-regions = <1>;
> +			redistributor-stride = <0x0 0x20000>;

You shouldn't need redistributor-stride here, unless your GIC
implementation is not compliant with the architecture (i.e. really
buggy). I only know of one such implementation, and I'd rather you
remove this property unless your GIC is indeed non-compliant. If that's
the case, you should also document it.

> +			reg = <0x17a00000 0x10000>,     /* GICD */
> +			      <0x17a60000 0x100000>;    /* GICR * 8 */
> +			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
> +
> +			gic-its@17a40000 {
> +				compatible = "arm,gic-v3-its";
> +				msi-controller;
> +				#msi-cells = <1>;
> +				reg = <0x17a40000 0x20000>;
> +				status = "disabled";
> +			};
> +		};

Thanks,

	M.
Rajendra Nayak March 12, 2018, 12:42 p.m. UTC | #2 
On 03/12/2018 04:59 PM, Marc Zyngier wrote:
> On 12/03/18 08:06, Rajendra Nayak wrote:
>> Add a skeletal sdm845 SoC dtsi and MTP board dts/dtsi files
>>
>> Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
>> Reviewed-by: Doug Anderson <dianders@chromium.org>
>> ---
>>  arch/arm64/boot/dts/qcom/Makefile       |   1 +
>>  arch/arm64/boot/dts/qcom/sdm845-mtp.dts |  15 ++
>>  arch/arm64/boot/dts/qcom/sdm845.dtsi    | 278 ++++++++++++++++++++++++++++++++
>>  3 files changed, 294 insertions(+)
>>  create mode 100644 arch/arm64/boot/dts/qcom/sdm845-mtp.dts
>>  create mode 100644 arch/arm64/boot/dts/qcom/sdm845.dtsi
>>
>> diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
>> index 55ec5ee7f7e8..9319e74b8906 100644
>> --- a/arch/arm64/boot/dts/qcom/Makefile
>> +++ b/arch/arm64/boot/dts/qcom/Makefile
>> @@ -6,3 +6,4 @@ dtb-$(CONFIG_ARCH_QCOM)	+= msm8916-mtp.dtb
>>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8992-bullhead-rev-101.dtb
>>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8994-angler-rev-101.dtb
>>  dtb-$(CONFIG_ARCH_QCOM)	+= msm8996-mtp.dtb
>> +dtb-$(CONFIG_ARCH_QCOM)	+= sdm845-mtp.dtb
>> diff --git a/arch/arm64/boot/dts/qcom/sdm845-mtp.dts b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
>> new file mode 100644
>> index 000000000000..979ab49913f1
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/sdm845-mtp.dts
>> @@ -0,0 +1,15 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * SDM845 MTP board device tree source
>> + *
>> + * Copyright (c) 2018, The Linux Foundation. All rights reserved.
>> + */
>> +
>> +/dts-v1/;
>> +
>> +#include "sdm845.dtsi"
>> +
>> +/ {
>> +	model = "Qualcomm Technologies, Inc. SDM845 MTP";
>> +	compatible = "qcom,sdm845-mtp";
>> +};
>> diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi
>> new file mode 100644
>> index 000000000000..d2407cd7a561
>> --- /dev/null
>> +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi
> 
> [...]
> 
>> +		intc: interrupt-controller@17a00000 {
>> +			compatible = "arm,gic-v3";
>> +			#address-cells = <1>;
>> +			#size-cells = <1>;
>> +			ranges;
>> +			#interrupt-cells = <3>;
>> +			interrupt-controller;
>> +			#redistributor-regions = <1>;
>> +			redistributor-stride = <0x0 0x20000>;
> 
> You shouldn't need redistributor-stride here, unless your GIC
> implementation is not compliant with the architecture (i.e. really
> buggy). I only know of one such implementation, and I'd rather you
> remove this property unless your GIC is indeed non-compliant. If that's
> the case, you should also document it.

Thanks Marc, I will drop the redistributor-stride and #redistributor-regions
as the bindings document seems to suggest its optional and is needed only
when more than 1 such region is present.