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Fri, 17 Sep 2021 10:32:20 +0800 Received: from localhost.localdomain (10.17.3.154) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Fri, 17 Sep 2021 10:32:18 +0800 From: Zhiyong Tao To: , , , , CC: , , , , , , , , , , , , Subject: [PATCH v12 2/5] dt-bindings: pinctrl: mt8195: change pull up/down description Date: Fri, 17 Sep 2021 10:32:13 +0800 Message-ID: <20210917023216.18384-3-zhiyong.tao@mediatek.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210917023216.18384-1-zhiyong.tao@mediatek.com> References: <20210917023216.18384-1-zhiyong.tao@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210916_193704_454190_66E6A208 X-CRM114-Status: GOOD ( 10.25 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org For supporting SI units in "bias-pull-down" & "bias-pull-up", Change pull up/down description Signed-off-by: Zhiyong Tao --- .../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..e6fc7a2978dc 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. + An example of using RSEL define: + pincontroller { + i2c0_pin { + pinmux = ; + bias-pull-up = ; + }; + }; + An example of using si unit resistance value(ohm): + &pio { + mediatek,rsel_resistance_in_si_unit; + } + pincontroller { + i2c0_pin { + pinmux = ; + 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. + An example of using RSEL define: + pincontroller { + i2c0_pin { + pinmux = ; + bias-pull-down = ; + }; + }; + An example of using si unit resistance value(ohm): + &pio { + mediatek,rsel_resistance_in_si_unit; + } + pincontroller { + i2c0_pin { + pinmux = ; + bias-pull-down = <1000>; + }; + }; bias-disable: true