Hi Mauro,
On 2021/7/26 14:19, Mauro Carvalho Chehab wrote:
> Em Mon, 26 Jul 2021 10:40:44 +0800
> Wei Xu <xuwei5@xxxxxxxxxxxxx> escreveu:
>
>> Hi Mauro,
>>
>> On 2021/7/24 16:55, Mauro Carvalho Chehab wrote:
>>> Add a device tree for the HiSilicon 6421v600 SPMI PMIC, used
>>> on HiKey970 board.
>>>
>>> As we now have support for it, change the fixed regulators
>>> used by the SD I/O to use the proper LDO supplies.
>>>
>>> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
>>> ---
>>> .../boot/dts/hisilicon/hi3670-hikey970.dts | 22 +----
>>> .../boot/dts/hisilicon/hikey970-pmic.dtsi | 86 +++++++++++++++++++
>>> 2 files changed, 89 insertions(+), 19 deletions(-)
>>> create mode 100644 arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi
>>>
>>> diff --git a/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts b/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts
>>> index d8abf442ee7e..7c32f5fd5cc5 100644
>>> --- a/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts
>>> +++ b/arch/arm64/boot/dts/hisilicon/hi3670-hikey970.dts
>>> @@ -12,6 +12,7 @@
>>>
>>> #include "hi3670.dtsi"
>>> #include "hikey970-pinctrl.dtsi"
>>> +#include "hikey970-pmic.dtsi"
>>>
>>> / {
>>> model = "HiKey970";
>>> @@ -39,23 +40,6 @@ memory@0 {
>>> reg = <0x0 0x0 0x0 0x0>;
>>> };
>>>
>>> - sd_1v8: regulator-1v8 {
>>> - compatible = "regulator-fixed";
>>> - regulator-name = "fixed-1.8V";
>>> - regulator-min-microvolt = <1800000>;
>>> - regulator-max-microvolt = <1800000>;
>>> - regulator-always-on;
>>> - };
>>> -
>>> - sd_3v3: regulator-3v3 {
>>> - compatible = "regulator-fixed";
>>> - regulator-name = "fixed-3.3V";
>>> - regulator-min-microvolt = <3300000>;
>>> - regulator-max-microvolt = <3300000>;
>>> - regulator-boot-on;
>>> - regulator-always-on;
>>> - };
>>> -
>>> wlan_en: wlan-en-1-8v {
>>> compatible = "regulator-fixed";
>>> regulator-name = "wlan-en-regulator";
>>> @@ -402,8 +386,8 @@ &dwmmc1 {
>>> pinctrl-0 = <&sd_pmx_func
>>> &sd_clk_cfg_func
>>> &sd_cfg_func>;
>>> - vmmc-supply = <&sd_3v3>;
>>> - vqmmc-supply = <&sd_1v8>;
>>> + vmmc-supply = <&ldo16>;
>>> + vqmmc-supply = <&ldo9>;
>>> status = "okay";
>>> };
>>>
>>> diff --git a/arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi b/arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi
>>> new file mode 100644
>>> index 000000000000..970047f2dabd
>>> --- /dev/null
>>> +++ b/arch/arm64/boot/dts/hisilicon/hikey970-pmic.dtsi
>>> @@ -0,0 +1,86 @@
>>> +// SPDX-License-Identifier: GPL-2.0
>>> +/*
>>> + * dts file for Hi6421v600 SPMI PMIC used at the HiKey970 Development Board
>>> + *
>>> + * Copyright (C) 2020, Huawei Tech. Co., Ltd.
>>> + */
>>> +
>>> +#include <dt-bindings/spmi/spmi.h>
>>> +
>>> +/ {
>>> + spmi: spmi@fff24000 {
>>> + compatible = "hisilicon,kirin970-spmi-controller";
>>> + #address-cells = <2>;
>>> + #size-cells = <0>;
>>> + status = "okay";
>>> + reg = <0x0 0xfff24000 0x0 0x1000>;
>>> + hisilicon,spmi-channel = <2>;
>>> +
>>> + pmic: pmic@0 {
>>> + compatible = "hisilicon,hi6421-spmi";
>>
>> Should this be "hisilicon,hi6421-pmic" which is already in the binding document "mfd/hi6421.txt"?
>> Others are OK to me.
>
> No.
>
> hisilicon,hi6421-pmic is used by this driver
> drivers/mfd/hi6421-pmic-core.c
>
> which provides support for the Hi6421 variants that don't use a MIPI
> SPMI bus.
>
> The "hisilicon,hi6421-spmi" compatible is for the new driver:
> drivers/mfd/hi6421-spmi-pmic.c
>
> And it is defined at:
> Documentation/devicetree/bindings/mfd/hisilicon,hi6421-spmi-pmic.yaml
>
> Both DT bindings and the driver were promoted from staging on this patch:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit/?h=staging-next&id=9bd9e0de1cf5b89c4854be505ac0a418ddcc01bf
Got it. Thanks for your kind explanation!
So I am fine with this patch.
Do you need my ack now or later I can merge it once it is out of staging.
Best Regards,
Wei
>
> Regards,
> Mauro
> .
>
