On Wed, 2021-09-01 at 18:21 +0800, Chen-Yu Tsai wrote:

On Wed, Sep 1, 2021 at 10:01 AM zhiyong.tao [off-list ref] wrote:

quoted

On Tue, 2021-08-31 at 17:13 -0500, Rob Herring wrote:

quoted

On Mon, Aug 30, 2021 at 08:36:01AM +0800, Zhiyong Tao wrote:

quoted

Change pull up/down description

Every commit is a 'change'. Your commit msg should explain 'why', not
what the diff is.

Hi robh,
we will add 'why' explanation in the commit msg in v12.

quoted

quoted

Signed-off-by: Zhiyong Tao <redacted>
---
 .../bindings/pinctrl/pinctrl-mt8195.yaml      | 32 +++++++++++++++++--
 1 file changed, 29 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
index 2f12ec59eee5..a341ed9f0095 100644
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/pinctrl-mt8195.yaml

@@ -85,9 +85,35 @@ 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-up: 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. 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.

Sounds like constraints on the values. Please write a schema.

we will add a schema here in v12.

Could the description be written to encourage device tree authors to
use SI units instead of the macros?

Thanks
ChenYu

In mt8195, SI units is used. we will change the description.
If user dont want to use SI units, We also provide the solution of the
macros for the solution.

quoted

Thanks

quoted

quoted

+
+      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. 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.

       bias-disable: true

--
2.18.0

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