diff mbox series

[v2,04/11] pinctrl: renesas: rzg2l: Add pin configuration support for pinmux groups

Message ID 20231207070700.4156557-5-claudiu.beznea.uj@bp.renesas.com
State New
Headers show
Series renesas: rzg3s: Add support for Ethernet | expand

Commit Message

Claudiu Dec. 7, 2023, 7:06 a.m. UTC 
From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>

On RZ/G3S different Ethernet pins need to be configured with different
settings (e.g., power-source needs to be set, RGMII TXC and TX_CTL pins
need output-enable). Commit adjust driver to allow specifying pin
configuration for pinmux groups. With this, DT settings like the following
are taken into account by driver:

eth0_pins: eth0 {
	tx_ctl {
		pinmux = <RZG2L_PORT_PINMUX(1, 1, 1)>;  /* ET0_TX_CTL */
		power-source = <1800>;
		output-enable;
		drive-strength-microamp = <5200>;
	};
};

Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

Changes in v2:
- moved num_configs check under num_pinmux check as suggested
- collected Rb tag

 drivers/pinctrl/renesas/pinctrl-rzg2l.c | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

Comments

Geert Uytterhoeven Dec. 13, 2023, 1:43 p.m. UTC | #1 
Hi Claudiu,

On Thu, Dec 7, 2023 at 8:08 AM Claudiu <claudiu.beznea@tuxon.dev> wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> On RZ/G3S different Ethernet pins need to be configured with different
> settings (e.g., power-source needs to be set, RGMII TXC and TX_CTL pins
> need output-enable). Commit adjust driver to allow specifying pin
> configuration for pinmux groups. With this, DT settings like the following
> are taken into account by driver:
>
> eth0_pins: eth0 {
>         tx_ctl {
>                 pinmux = <RZG2L_PORT_PINMUX(1, 1, 1)>;  /* ET0_TX_CTL */
>                 power-source = <1800>;
>                 output-enable;
>                 drive-strength-microamp = <5200>;
>         };
> };
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
> ---
>
> Changes in v2:

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
i.e. will queue in renesas-pinctrl-for-v6.8.

> - moved num_configs check under num_pinmux check as suggested

Actually my comment was wrong, as I had misunderstood the code flow
("goto done") in case num_pins is non-zero.

I will revert to v1 while queuing in renesas-pinctrl-for-v6.8.

Gr{oetje,eeting}s,

                        Geert
diff mbox series

Patch

diff --git a/drivers/pinctrl/renesas/pinctrl-rzg2l.c b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
index 2eb240b731d5..58786455ecf3 100644
--- a/drivers/pinctrl/renesas/pinctrl-rzg2l.c
+++ b/drivers/pinctrl/renesas/pinctrl-rzg2l.c
@@ -376,8 +376,11 @@  static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 		goto done;
 	}
 
-	if (num_pinmux)
+	if (num_pinmux) {
+		if (num_configs)
+			nmaps += 1;
 		nmaps += 1;
+	}
 
 	if (num_pins)
 		nmaps += num_pins;
@@ -462,6 +465,16 @@  static int rzg2l_dt_subnode_to_map(struct pinctrl_dev *pctldev,
 	maps[idx].data.mux.function = name;
 	idx++;
 
+	if (num_configs) {
+		ret = rzg2l_map_add_config(&maps[idx], name,
+					   PIN_MAP_TYPE_CONFIGS_GROUP,
+					   configs, num_configs);
+		if (ret < 0)
+			goto remove_group;
+
+		idx++;
+	};
+
 	dev_dbg(pctrl->dev, "Parsed %pOF with %d pins\n", np, num_pinmux);
 	ret = 0;
 	goto done;