[PATCH v4 0/2] add ast2600 NCSI pin groups

[PATCH v4 0/2] add ast2600 NCSI pin groups

[Potin Lai]

In the NCSI pin table, the reference clock output pin (RMIIXRCLKO) is not
needed on the management controller side.

LINK: [v1] https://lore.kernel.org/all/20240613080725.2531580-1-potin.lai.pt@gmail.com/
LINK: [v2] https://lore.kernel.org/all/20240620012512.3109518-1-potin.lai.pt@gmail.com/
LINK: [v3] https://lore.kernel.org/all/20240620084337.3525690-1-potin.lai.pt@gmail.com/

changes v3 --> v4:
- remove pin list in dt-bindings commit message
- add note in dt-bindings document to descript the reason of adding NCSI
  groups

changes v2 --> v3:
- fix commit message typo
- move dt-bindings patch forward

changes v1 --> v2:
- add NCSI pin group in dt-bindings document

Potin Lai (2):
  dt-bindings: pinctrl: aspeed,ast2600-pinctrl: add NCSI groups
  pinctrl: aspeed-g6: Add NCSI pin group config

 .../bindings/pinctrl/aspeed,ast2600-pinctrl.yaml       |  7 +++++++
 drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c             | 10 ++++++++--
 2 files changed, 15 insertions(+), 2 deletions(-)

-- 
2.31.1

[PATCH v4 1/2] dt-bindings: pinctrl: aspeed,ast2600-pinctrl: add NCSI groups

[Potin Lai]

In the NCSI pin table, the reference clock output pin (RMIIXRCLKO) is not
needed on the management controller side.

Add "NCSI" pin groups that are equivalent to the RMII pin groups, but
without the RMIIXRCLKO pin.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
---
 .../bindings/pinctrl/aspeed,ast2600-pinctrl.yaml           | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/pinctrl/aspeed,ast2600-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/aspeed,ast2600-pinctrl.yaml
index 00b6974a5ed3d..80974c46f3ef9 100644
--- a/Documentation/devicetree/bindings/pinctrl/aspeed,ast2600-pinctrl.yaml
+++ b/Documentation/devicetree/bindings/pinctrl/aspeed,ast2600-pinctrl.yaml
@@ -19,6 +19,11 @@ description: |+
   Refer to the bindings described in
   Documentation/devicetree/bindings/mfd/syscon.yaml
 
+  Note: According to the NCSI specification, the reference clock output pin
+  (RMIIXRCLKO) is not required on the management controller side. To optimize
+  pin usage, add "NCSI" pin groups that are equivalent to the RMII pin groups,
+  but without the RMIIXRCLKO pin.
+
 properties:
   compatible:
     const: aspeed,ast2600-pinctrl
@@ -337,6 +342,8 @@ additionalProperties:
         - MDIO2
         - MDIO3
         - MDIO4
+        - NCSI3
+        - NCSI4
         - NCTS1
         - NCTS2
         - NCTS3
-- 
2.31.1

[PATCH v4 2/2] pinctrl: aspeed-g6: Add NCSI pin group config

[Potin Lai]

Based on the NCSI pin table (Table 181) in NCSI spec[1], the reference
clock output pin (RMIIXRCLKO) is not needed on the management controller
side.

To optimize pin usage, add new NCSI pin group that excludes RMIIXRCLKO,
reducing the number of required pins.

LINK: [1] https://www.dmtf.org/sites/default/files/standards/documents/DSP0222_1.2.0a.pdf

Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>
---
 drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c b/drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c
index 7938741136a2c..31e4e0b342a00 100644
--- a/drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c
+++ b/drivers/pinctrl/aspeed/pinctrl-aspeed-g6.c
@@ -249,7 +249,9 @@ PIN_DECL_2(E26, GPIOD3, RGMII3RXD3, RMII3RXER);
 
 FUNC_GROUP_DECL(RGMII3, H24, J22, H22, H23, G22, F22, G23, G24, F23, F26, F25,
 		E26);
-FUNC_GROUP_DECL(RMII3, H24, J22, H22, H23, G23, F23, F26, F25, E26);
+GROUP_DECL(RMII3, H24, J22, H22, H23, G23, F23, F26, F25, E26);
+GROUP_DECL(NCSI3, J22, H22, H23, G23, F23, F26, F25, E26);
+FUNC_DECL_2(RMII3, RMII3, NCSI3);
 
 #define F24 28
 SIG_EXPR_LIST_DECL_SESG(F24, NCTS3, NCTS3, SIG_DESC_SET(SCU410, 28));
@@ -355,7 +357,9 @@ FUNC_GROUP_DECL(NRTS4, B24);
 
 FUNC_GROUP_DECL(RGMII4, F24, E23, E24, E25, D26, D24, C25, C26, C24, B26, B25,
 		B24);
-FUNC_GROUP_DECL(RMII4, F24, E23, E24, E25, C25, C24, B26, B25, B24);
+GROUP_DECL(RMII4, F24, E23, E24, E25, C25, C24, B26, B25, B24);
+GROUP_DECL(NCSI4, E23, E24, E25, C25, C24, B26, B25, B24);
+FUNC_DECL_2(RMII4, RMII4, NCSI4);
 
 #define D22 40
 SIG_EXPR_LIST_DECL_SESG(D22, SD1CLK, SD1, SIG_DESC_SET(SCU414, 8));
@@ -1976,6 +1980,8 @@ static const struct aspeed_pin_group aspeed_g6_groups[] = {
 	ASPEED_PINCTRL_GROUP(MDIO2),
 	ASPEED_PINCTRL_GROUP(MDIO3),
 	ASPEED_PINCTRL_GROUP(MDIO4),
+	ASPEED_PINCTRL_GROUP(NCSI3),
+	ASPEED_PINCTRL_GROUP(NCSI4),
 	ASPEED_PINCTRL_GROUP(NCTS1),
 	ASPEED_PINCTRL_GROUP(NCTS2),
 	ASPEED_PINCTRL_GROUP(NCTS3),
-- 
2.31.1

Re: [PATCH v4 1/2] dt-bindings: pinctrl: aspeed,ast2600-pinctrl: add NCSI groups

[Andrew Jeffery]

On Fri, 2024-06-21 at 17:31 +0800, Potin Lai wrote:
> In the NCSI pin table, the reference clock output pin (RMIIXRCLKO) is not
> needed on the management controller side.
> 
> Add "NCSI" pin groups that are equivalent to the RMII pin groups, but
> without the RMIIXRCLKO pin.
> 
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>

Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>

Re: [PATCH v4 2/2] pinctrl: aspeed-g6: Add NCSI pin group config

[Andrew Jeffery]

On Fri, 2024-06-21 at 17:31 +0800, Potin Lai wrote:
> Based on the NCSI pin table (Table 181) in NCSI spec[1], the reference
> clock output pin (RMIIXRCLKO) is not needed on the management controller
> side.
> 
> To optimize pin usage, add new NCSI pin group that excludes RMIIXRCLKO,
> reducing the number of required pins.
> 
> LINK: [1] https://www.dmtf.org/sites/default/files/standards/documents/DSP0222_1.2.0a.pdf
> 
> Signed-off-by: Potin Lai <potin.lai.pt@gmail.com>

Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>

Re: [PATCH v4 0/2] add ast2600 NCSI pin groups

[Linus Walleij]

On Fri, Jun 21, 2024 at 11:33 AM Potin Lai <potin.lai.pt@gmail.com> wrote:

> In the NCSI pin table, the reference clock output pin (RMIIXRCLKO) is not
> needed on the management controller side.

This v4 patch set applied!

Yours,
Linus Walleij