All of lore.kernel.org
 help / color / mirror / Atom feed
From: Martin Kepplinger <martin.kepplinger@puri.sm>
To: martin.kepplinger@puri.sm
Cc: devicetree@vger.kernel.org, festevam@gmail.com,
	kernel@pengutronix.de, kernel@puri.sm,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org,
	robh@kernel.org, shawnguo@kernel.org,
	Angus Ainslie <angus@akkea.ca>
Subject: [PATCH v2 5/7] arm64: dts: imx8mq-librem5: add power sequencing for M.2 cards
Date: Tue,  5 Oct 2021 15:49:00 +0200	[thread overview]
Message-ID: <20211005134902.2138731-6-martin.kepplinger@puri.sm> (raw)
In-Reply-To: <20211005134902.2138731-1-martin.kepplinger@puri.sm>

From: Angus Ainslie <angus@akkea.ca>

Some wifi cards need reset asserted until after the power supplies
have been enabled.

So wire up the W_DISABLE signal for the SDIO port (WIFI_REG_ON net) and
the BT_REG_ON net to use it for power sequencing.

Signed-off-by: Angus Ainslie <angus@akkea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
---
 .../boot/dts/freescale/imx8mq-librem5.dtsi    | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index 7a09312f31c4..396eb4434229 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -198,6 +198,14 @@ simple-audio-card,codec {
 		};
 	};
 
+	usdhc2_pwrseq: pwrseq {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_bt>, <&pinctrl_wifi_disable>;
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&gpio3 25 GPIO_ACTIVE_HIGH>,
+			      <&gpio4 29 GPIO_ACTIVE_HIGH>;
+	};
+
 	bm818_codec: sound-wwan-codec {
 		compatible = "broadmobi,bm818", "option,gtm601";
 		#sound-dai-cells = <0>;
@@ -312,6 +320,13 @@ MX8MQ_IOMUXC_NAND_DQS_GPIO3_IO14	0x83
 		>;
 	};
 
+	pinctrl_bt: btgrp {
+		fsl,pins = <
+			/* BT_REG_ON */
+			MX8MQ_IOMUXC_SAI5_MCLK_GPIO3_IO25	0x83
+		>;
+	};
+
 	pinctrl_charger_in: chargeringrp {
 		fsl,pins = <
 			/* CHRG_INT */
@@ -643,6 +658,13 @@ MX8MQ_IOMUXC_SD2_RESET_B_USDHC2_RESET_B 0xc1
 		>;
 	};
 
+	pinctrl_wifi_disable: wifidisablegrp {
+		fsl,pins = <
+			/* WIFI_REG_ON */
+			MX8MQ_IOMUXC_SAI3_RXC_GPIO4_IO29	0x83
+		>;
+	};
+
 	pinctrl_wifi_pwr: wifipwrgrp {
 		fsl,pins = <
 			/* WIFI3V3_EN */
@@ -1212,6 +1234,7 @@ &usdhc2 {
 	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
 	bus-width = <4>;
 	vmmc-supply = <&reg_wifi_3v3>;
+	mmc-pwrseq = <&usdhc2_pwrseq>;
 	post-power-on-delay-ms = <1000>;
 	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
 	disable-wp;
-- 
2.30.2


WARNING: multiple messages have this Message-ID (diff)
From: Martin Kepplinger <martin.kepplinger@puri.sm>
To: martin.kepplinger@puri.sm
Cc: devicetree@vger.kernel.org, festevam@gmail.com,
	kernel@pengutronix.de, kernel@puri.sm,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, phone-devel@vger.kernel.org,
	robh@kernel.org, shawnguo@kernel.org,
	Angus Ainslie <angus@akkea.ca>
Subject: [PATCH v2 5/7] arm64: dts: imx8mq-librem5: add power sequencing for M.2 cards
Date: Tue,  5 Oct 2021 15:49:00 +0200	[thread overview]
Message-ID: <20211005134902.2138731-6-martin.kepplinger@puri.sm> (raw)
In-Reply-To: <20211005134902.2138731-1-martin.kepplinger@puri.sm>

From: Angus Ainslie <angus@akkea.ca>

Some wifi cards need reset asserted until after the power supplies
have been enabled.

So wire up the W_DISABLE signal for the SDIO port (WIFI_REG_ON net) and
the BT_REG_ON net to use it for power sequencing.

Signed-off-by: Angus Ainslie <angus@akkea.ca>
Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm>
---
 .../boot/dts/freescale/imx8mq-librem5.dtsi    | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
index 7a09312f31c4..396eb4434229 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mq-librem5.dtsi
@@ -198,6 +198,14 @@ simple-audio-card,codec {
 		};
 	};
 
+	usdhc2_pwrseq: pwrseq {
+		pinctrl-names = "default";
+		pinctrl-0 = <&pinctrl_bt>, <&pinctrl_wifi_disable>;
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&gpio3 25 GPIO_ACTIVE_HIGH>,
+			      <&gpio4 29 GPIO_ACTIVE_HIGH>;
+	};
+
 	bm818_codec: sound-wwan-codec {
 		compatible = "broadmobi,bm818", "option,gtm601";
 		#sound-dai-cells = <0>;
@@ -312,6 +320,13 @@ MX8MQ_IOMUXC_NAND_DQS_GPIO3_IO14	0x83
 		>;
 	};
 
+	pinctrl_bt: btgrp {
+		fsl,pins = <
+			/* BT_REG_ON */
+			MX8MQ_IOMUXC_SAI5_MCLK_GPIO3_IO25	0x83
+		>;
+	};
+
 	pinctrl_charger_in: chargeringrp {
 		fsl,pins = <
 			/* CHRG_INT */
@@ -643,6 +658,13 @@ MX8MQ_IOMUXC_SD2_RESET_B_USDHC2_RESET_B 0xc1
 		>;
 	};
 
+	pinctrl_wifi_disable: wifidisablegrp {
+		fsl,pins = <
+			/* WIFI_REG_ON */
+			MX8MQ_IOMUXC_SAI3_RXC_GPIO4_IO29	0x83
+		>;
+	};
+
 	pinctrl_wifi_pwr: wifipwrgrp {
 		fsl,pins = <
 			/* WIFI3V3_EN */
@@ -1212,6 +1234,7 @@ &usdhc2 {
 	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
 	bus-width = <4>;
 	vmmc-supply = <&reg_wifi_3v3>;
+	mmc-pwrseq = <&usdhc2_pwrseq>;
 	post-power-on-delay-ms = <1000>;
 	cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>;
 	disable-wp;
-- 
2.30.2


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  parent reply	other threads:[~2021-10-05 13:50 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-05 13:48 [PATCH v2 0/7] arm64: dts: imx8mq-librem5: wifi updates and minor fixes Martin Kepplinger
2021-10-05 13:48 ` Martin Kepplinger
2021-10-05 13:48 ` [PATCH v2 1/7] arm64: dts: imx8mq-librem5: add reset gpio to mantix panel description Martin Kepplinger
2021-10-05 13:48   ` Martin Kepplinger
2021-10-05 13:48 ` [PATCH v2 2/7] arm64: dts: imx8mq-librem5: Fix led_r and led_g pinctrl assignments Martin Kepplinger
2021-10-05 13:48   ` Martin Kepplinger
2021-10-05 13:48 ` [PATCH v2 3/7] arm64: dts: imx8mq-librem5: wire up the wifi regulator Martin Kepplinger
2021-10-05 13:48   ` Martin Kepplinger
2021-10-05 13:48 ` [PATCH v2 4/7] arm64: dts: imx8mq-librem5: delay the startup of the SDIO Martin Kepplinger
2021-10-05 13:48   ` Martin Kepplinger
2021-10-05 13:49 ` Martin Kepplinger [this message]
2021-10-05 13:49   ` [PATCH v2 5/7] arm64: dts: imx8mq-librem5: add power sequencing for M.2 cards Martin Kepplinger
2021-10-05 13:49 ` [PATCH v2 6/7] arm64: dts: imx8mq-librem5: Limit the max sdio frequency Martin Kepplinger
2021-10-05 13:49   ` Martin Kepplinger
2021-10-05 13:49 ` [PATCH v2 7/7] arm64: dts: imx8mq-librem5: set debounce interval of volume buttons to 50ms Martin Kepplinger
2021-10-05 13:49   ` Martin Kepplinger
2021-10-15  1:46   ` Shawn Guo
2021-10-15  1:46     ` Shawn Guo
2021-10-15  7:18     ` Martin Kepplinger
2021-10-15  7:18       ` Martin Kepplinger

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20211005134902.2138731-6-martin.kepplinger@puri.sm \
    --to=martin.kepplinger@puri.sm \
    --cc=angus@akkea.ca \
    --cc=devicetree@vger.kernel.org \
    --cc=festevam@gmail.com \
    --cc=kernel@pengutronix.de \
    --cc=kernel@puri.sm \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=phone-devel@vger.kernel.org \
    --cc=robh@kernel.org \
    --cc=shawnguo@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.