From nobody Thu Jul 10 08:27:19 2025 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail(p=quarantine dis=quarantine) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 1639492208842948.9273639281165; Tue, 14 Dec 2021 06:30:08 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234162AbhLNOaG (ORCPT ); Tue, 14 Dec 2021 09:30:06 -0500 Received: from lelv0143.ext.ti.com ([198.47.23.248]:38286 "EHLO lelv0143.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234007AbhLNO34 (ORCPT ); Tue, 14 Dec 2021 09:29:56 -0500 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by lelv0143.ext.ti.com (8.15.2/8.15.2) with ESMTP id 1BEETdjs092887; Tue, 14 Dec 2021 08:29:39 -0600 Received: from DFLE101.ent.ti.com (dfle101.ent.ti.com [10.64.6.22]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 1BEETdjc024959 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 14 Dec 2021 08:29:39 -0600 Received: from DFLE110.ent.ti.com (10.64.6.31) by DFLE101.ent.ti.com (10.64.6.22) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Tue, 14 Dec 2021 08:29:39 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE110.ent.ti.com (10.64.6.31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Tue, 14 Dec 2021 08:29:39 -0600 Received: from gsaswath-HP-ProBook-640-G5.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 1BEETVkO038465; Tue, 14 Dec 2021 08:29:36 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1639492179; bh=3xoua+2zHoAAJhZbL9Wp9YgmHuWlCRypj9/vtFjNXtI=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=PseY9XMxeZ5mxq2JoZ34aj0L7EclVO9cSA1NtNYVDcyJpq9WPGZhitsVK2oqddTju K5WzPWyD7zOBv2fky/90WvrimRc3/XMxxZpuUkEazhxaKjypDvslvMXTpkk+6A6i8s 8WK10kODJL9T2Lof0lfYRRiQvBJW+K4NnQr5SjXU= From: Aswath Govindraju CC: Aswath Govindraju , Wolfgang Grandegger , Marc Kleine-Budde , Kishon Vijay Abraham I , Vinod Koul , Rob Herring , , , , Subject: [PATCH v2 1/2] dt-bindings: phy: ti,tcan104x-can: Document mux-states property Date: Tue, 14 Dec 2021 19:59:07 +0530 Message-ID: <20211214142908.27940-2-a-govindraju@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211214142908.27940-1-a-govindraju@ti.com> References: <20211214142908.27940-1-a-govindraju@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1639492210860100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On some boards, for routing CAN signals from controller to transceivers, muxes might need to be set. This can be implemented using mux-states property. Therefore, document the same in the respective bindings. Signed-off-by: Aswath Govindraju --- .../devicetree/bindings/phy/ti,tcan104x-can.yaml | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/Documentation/devicetree/bindings/phy/ti,tcan104x-can.yaml b/D= ocumentation/devicetree/bindings/phy/ti,tcan104x-can.yaml index 6107880e5246..7b9216e43b58 100644 --- a/Documentation/devicetree/bindings/phy/ti,tcan104x-can.yaml +++ b/Documentation/devicetree/bindings/phy/ti,tcan104x-can.yaml @@ -37,6 +37,15 @@ properties: max bit rate supported in bps minimum: 1 =20 + mux-states: + description: + mux controller node to route the signals from controller to + transceiver. Two arguments can be present depending on the + mux chip. If one argument is used then it represents the state + to be set on the mux-chip. If there are two arguments then the + first argument is the control line and the second argument is + its corresponding state to be set, on the mux-chip. + required: - compatible - '#phy-cells' @@ -53,4 +62,5 @@ examples: max-bitrate =3D <5000000>; standby-gpios =3D <&wakeup_gpio1 16 GPIO_ACTIVE_LOW>; enable-gpios =3D <&main_gpio1 67 GPIO_ACTIVE_HIGH>; + mux-states =3D <&mux0 1>; }; --=20 2.17.1 From nobody Thu Jul 10 08:27:19 2025 Delivered-To: importer2@patchew.org Received-SPF: pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; envelope-from=linux-kernel-owner@vger.kernel.org; helo=vger.kernel.org; Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail(p=quarantine dis=quarantine) header.from=ti.com Return-Path: Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mx.zohomail.com with SMTP id 1639492206105686.1690789087162; Tue, 14 Dec 2021 06:30:06 -0800 (PST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233992AbhLNOaE (ORCPT ); Tue, 14 Dec 2021 09:30:04 -0500 Received: from fllv0015.ext.ti.com ([198.47.19.141]:55368 "EHLO fllv0015.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230495AbhLNO34 (ORCPT ); Tue, 14 Dec 2021 09:29:56 -0500 Received: from lelv0265.itg.ti.com ([10.180.67.224]) by fllv0015.ext.ti.com (8.15.2/8.15.2) with ESMTP id 1BEETiaH103679; Tue, 14 Dec 2021 08:29:44 -0600 Received: from DFLE109.ent.ti.com (dfle109.ent.ti.com [10.64.6.30]) by lelv0265.itg.ti.com (8.15.2/8.15.2) with ESMTPS id 1BEETixj055333 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 14 Dec 2021 08:29:44 -0600 Received: from DFLE111.ent.ti.com (10.64.6.32) by DFLE109.ent.ti.com (10.64.6.30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14; Tue, 14 Dec 2021 08:29:44 -0600 Received: from lelv0327.itg.ti.com (10.180.67.183) by DFLE111.ent.ti.com (10.64.6.32) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2308.14 via Frontend Transport; Tue, 14 Dec 2021 08:29:44 -0600 Received: from gsaswath-HP-ProBook-640-G5.dal.design.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by lelv0327.itg.ti.com (8.15.2/8.15.2) with ESMTP id 1BEETVkP038465; Tue, 14 Dec 2021 08:29:41 -0600 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1639492184; bh=3nKHdU9Kh7/r0pzRbD51LK3XVndbk0YQCuGV0fG4vOg=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=vVSp39ExUFwQfw9ZabSiJB8OASpB56TZZzI6pCm3e0K6Q8o42BAIs2KH/VadbyMOX Lx3YYwJ1WnE2kaXw8wHeXANy8VmoSF6rZ6xB3eMeDwPfsmOnKoi1qEWc7aXSL4AZjG H72W1EhZCLWVpzy1humgUeF6PVjNk+xeA/KEF6KE= From: Aswath Govindraju CC: Aswath Govindraju , Wolfgang Grandegger , Marc Kleine-Budde , Kishon Vijay Abraham I , Vinod Koul , Rob Herring , , , , Subject: [PATCH v2 2/2] phy: phy-can-transceiver: Add support for setting mux Date: Tue, 14 Dec 2021 19:59:08 +0530 Message-ID: <20211214142908.27940-3-a-govindraju@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20211214142908.27940-1-a-govindraju@ti.com> References: <20211214142908.27940-1-a-govindraju@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 To: unlisted-recipients:; (no To-header on input) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1639492206530100001 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On some boards, for routing CAN signals from controller to transceiver, muxes might need to be set. Therefore, add support for setting the mux by reading the mux-states property from the device tree node. Signed-off-by: Aswath Govindraju --- drivers/phy/Kconfig | 1 + drivers/phy/phy-can-transceiver.c | 24 +++++++++++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/phy/Kconfig b/drivers/phy/Kconfig index 82b63e60c5a2..300b0f2b5f84 100644 --- a/drivers/phy/Kconfig +++ b/drivers/phy/Kconfig @@ -64,6 +64,7 @@ config USB_LGM_PHY config PHY_CAN_TRANSCEIVER tristate "CAN transceiver PHY" select GENERIC_PHY + select MULTIPLEXER help This option enables support for CAN transceivers as a PHY. This driver provides function for putting the transceivers in various diff --git a/drivers/phy/phy-can-transceiver.c b/drivers/phy/phy-can-transc= eiver.c index 6f3fe37dee0e..95c6dbb52da7 100644 --- a/drivers/phy/phy-can-transceiver.c +++ b/drivers/phy/phy-can-transceiver.c @@ -10,6 +10,7 @@ #include #include #include +#include =20 struct can_transceiver_data { u32 flags; @@ -21,13 +22,22 @@ struct can_transceiver_phy { struct phy *generic_phy; struct gpio_desc *standby_gpio; struct gpio_desc *enable_gpio; + struct mux_state *mux_state; }; =20 /* Power on function */ static int can_transceiver_phy_power_on(struct phy *phy) { struct can_transceiver_phy *can_transceiver_phy =3D phy_get_drvdata(phy); - + int ret; + + if (can_transceiver_phy->mux_state) { + ret =3D mux_state_select(can_transceiver_phy->mux_state); + if (ret) { + dev_err(&phy->dev, "Failed to select CAN mux: %d\n", ret); + return ret; + } + } if (can_transceiver_phy->standby_gpio) gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 0); if (can_transceiver_phy->enable_gpio) @@ -45,6 +55,8 @@ static int can_transceiver_phy_power_off(struct phy *phy) gpiod_set_value_cansleep(can_transceiver_phy->standby_gpio, 1); if (can_transceiver_phy->enable_gpio) gpiod_set_value_cansleep(can_transceiver_phy->enable_gpio, 0); + if (can_transceiver_phy->mux_state) + mux_state_deselect(can_transceiver_phy->mux_state); =20 return 0; } @@ -95,6 +107,16 @@ static int can_transceiver_phy_probe(struct platform_de= vice *pdev) match =3D of_match_node(can_transceiver_phy_ids, pdev->dev.of_node); drvdata =3D match->data; =20 + if (of_property_read_bool(dev->of_node, "mux-states")) { + struct mux_state *mux_state; + + mux_state =3D devm_mux_state_get(dev, NULL); + if (IS_ERR(mux_state)) + return dev_err_probe(&pdev->dev, PTR_ERR(mux_state), + "failed to get mux\n"); + can_transceiver_phy->mux_state =3D mux_state; + } + phy =3D devm_phy_create(dev, dev->of_node, &can_transceiver_phy_ops); if (IS_ERR(phy)) { --=20 2.17.1