From: Rob Herring <robh@kernel.org>
To: Zhiyong Tao <zhiyong.tao@mediatek.com>
Cc: linus.walleij@linaro.org, mark.rutland@arm.com,
matthias.bgg@gmail.com, sean.wang@kernel.org,
srv_heupstream@mediatek.com, hui.liu@mediatek.com,
light.hsieh@mediatek.com, biao.huang@mediatek.com,
hongzhou.yang@mediatek.com, sean.wang@mediatek.com,
seiya.wang@mediatek.com, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, linux-gpio@vger.kernel.org
Subject: Re: [PATCH v13 2/5] dt-bindings: pinctrl: mt8195: change pull up/down description
Date: Thu, 23 Sep 2021 20:00:23 -0500 [thread overview]
Message-ID: <YU0jJxr0OJoqahHr@robh.at.kernel.org> (raw)
In-Reply-To: <20210922025640.11600-3-zhiyong.tao@mediatek.com>
On Wed, Sep 22, 2021 at 10:56:37AM +0800, Zhiyong Tao wrote:
> For supporting SI units in "bias-pull-down" & "bias-pull-up",
> Change pull up/down description
>
> Signed-off-by: Zhiyong Tao <zhiyong.tao@mediatek.com>
> ---
> .../bindings/pinctrl/pinctrl-mt8195.yaml | 65 ++++++++++++++++++-
> 1 file changed, 63 insertions(+), 2 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
> index 2f12ec59eee5..2f2afabbe4fc 100644
> --- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
> +++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
> @@ -85,9 +85,70 @@ patternProperties:
> 2/4/6/8/10/12/14/16mA in mt8195.
> enum: [0, 1, 2, 3, 4, 5, 6, 7]
>
> - bias-pull-down: true
> + bias-pull-down:
> + description: |
> + For pull down type is normal, it don't need add RSEL & R1R0 define
> + and resistance value.
> + For pull down type is PUPD/R0/R1 type, it can add R1R0 define to
> + set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &
> + "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" & "MTK_PUPD_SET_R1R0_11"
> + define in mt8195.
> + For pull down type is RSEL, it can add RSEL define & resistance value(ohm)
> + to set different resistance by identifying property "mediatek,rsel_resistance_in_si_unit".
> + It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001"
> + & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011" & "MTK_PULL_SET_RSEL_100"
> + & "MTK_PULL_SET_RSEL_101" & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111"
> + define in mt8195. It can also support resistance value(ohm) "75000" & "5000" in mt8195.
Please make a schema:
oneOf:
- enum: [ 0, 1, ...7 ]
- description: MT8195...
enum: [ 5000, 75000 ]
> + An example of using RSEL define:
> + pincontroller {
> + i2c0_pin {
> + pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
> + bias-pull-down = <MTK_PULL_SET_RSEL_001>;
> + };
> + };
> + An example of using si unit resistance value(ohm):
> + &pio {
> + mediatek,rsel_resistance_in_si_unit;
> + }
> + pincontroller {
> + i2c0_pin {
> + pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
> + bias-pull-down = <75000>;
> + };
> + };
>
> - bias-pull-up: true
> + bias-pull-up:
> + description: |
> + For pull up type is normal, it don't need add RSEL & R1R0 define
> + and resistance value.
> + For pull up type is PUPD/R0/R1 type, it can add R1R0 define to
> + set different resistance. It can support "MTK_PUPD_SET_R1R0_00" &
> + "MTK_PUPD_SET_R1R0_01" & "MTK_PUPD_SET_R1R0_10" & "MTK_PUPD_SET_R1R0_11"
> + define in mt8195.
> + For pull up type is RSEL, it can add RSEL define & resistance value(ohm)
> + to set different resistance by identifying property "mediatek,rsel_resistance_in_si_unit".
> + It can support "MTK_PULL_SET_RSEL_000" & "MTK_PULL_SET_RSEL_001"
> + & "MTK_PULL_SET_RSEL_010" & "MTK_PULL_SET_RSEL_011" & "MTK_PULL_SET_RSEL_100"
> + & "MTK_PULL_SET_RSEL_101" & "MTK_PULL_SET_RSEL_110" & "MTK_PULL_SET_RSEL_111"
> + define in mt8195. It can also support resistance value(ohm)
> + "1000" & "1500" & "2000" & "3000" & "4000" & "5000" & "10000" & "75000" in mt8195.
Same here.
> + An example of using RSEL define:
> + pincontroller {
> + i2c0_pin {
> + pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
> + bias-pull-up = <MTK_PULL_SET_RSEL_001>;
> + };
> + };
> + An example of using si unit resistance value(ohm):
> + &pio {
> + mediatek,rsel_resistance_in_si_unit;
> + }
> + pincontroller {
> + i2c0_pin {
> + pinmux = <PINMUX_GPIO8__FUNC_SDA0>;
> + bias-pull-up = <1000>;
> + };
> + };
>
> bias-disable: true
>
> --
> 2.25.1
>
>
next prev parent reply other threads:[~2021-09-24 1:00 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-22 2:56 [PATCH v13 0/5] Mediatek pinctrl patch on mt8195 Zhiyong Tao
2021-09-22 2:56 ` [PATCH v13 1/5] dt-bindings: pinctrl: mt8195: add rsel define Zhiyong Tao
2021-09-22 2:56 ` [PATCH v13 2/5] dt-bindings: pinctrl: mt8195: change pull up/down description Zhiyong Tao
2021-09-24 1:00 ` Rob Herring [this message]
2021-09-22 2:56 ` [PATCH v13 3/5] pinctrl: mediatek: fix coding style Zhiyong Tao
2021-09-22 3:08 ` Chen-Yu Tsai
2021-09-22 2:56 ` [PATCH v13 4/5] pinctrl: mediatek: support rsel feature Zhiyong Tao
2021-09-23 7:35 ` Chen-Yu Tsai
2021-09-22 2:56 ` [PATCH v13 5/5] pinctrl: mediatek: add rsel setting on MT8195 Zhiyong Tao
2021-09-22 9:57 ` Chen-Yu Tsai
2021-09-23 21:27 ` [PATCH v13 0/5] Mediatek pinctrl patch on mt8195 Linus Walleij
2021-09-23 21:31 ` Linus Walleij
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