From: Faiz Abbas <faiz_abbas@ti.com>
To: <linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <devicetree@vger.kernel.org>,
<netdev@vger.kernel.org>, <linux-can@vger.kernel.org>
Cc: <broonie@kernel.org>, <lgirdwood@gmail.com>,
<catalin.marinas@arm.com>, <mark.rutland@arm.com>,
<robh+dt@kernel.org>, <mkl@pengutronix.de>, <wg@grandegger.com>,
<sriram.dash@samsung.com>, <dmurphy@ti.com>, <faiz_abbas@ti.com>
Subject: [PATCH v2 2/3] can: m_can: m_can_platform: Add support for enabling transceiver
Date: Mon, 17 Feb 2020 19:58:35 +0530 [thread overview]
Message-ID: <20200217142836.23702-3-faiz_abbas@ti.com> (raw)
In-Reply-To: <20200217142836.23702-1-faiz_abbas@ti.com>
CAN transceivers on some boards have a standby line which can be
toggled to enable/disable the transceiver. Model this as an optional
fixed xceiver regulator.
Signed-off-by: Faiz Abbas <faiz_abbas@ti.com>
Acked-by: Sriram Dash <sriram.dash@samsung.com>
---
drivers/net/can/m_can/m_can_platform.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/net/can/m_can/m_can_platform.c b/drivers/net/can/m_can/m_can_platform.c
index 38ea5e600fb8..719468fab507 100644
--- a/drivers/net/can/m_can/m_can_platform.c
+++ b/drivers/net/can/m_can/m_can_platform.c
@@ -6,6 +6,7 @@
// Copyright (C) 2018-19 Texas Instruments Incorporated - http://www.ti.com/
#include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
#include "m_can.h"
@@ -57,6 +58,7 @@ static int m_can_plat_probe(struct platform_device *pdev)
{
struct m_can_classdev *mcan_class;
struct m_can_plat_priv *priv;
+ struct regulator *reg_xceiver;
struct resource *res;
void __iomem *addr;
void __iomem *mram_addr;
@@ -111,6 +113,10 @@ static int m_can_plat_probe(struct platform_device *pdev)
m_can_init_ram(mcan_class);
+ reg_xceiver = devm_regulator_get_optional(&pdev->dev, "xceiver");
+ if (PTR_ERR(reg_xceiver) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+
ret = m_can_class_register(mcan_class);
failed_ret:
--
2.19.2
next prev parent reply other threads:[~2020-02-17 14:27 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-02-17 14:28 [PATCH v2 0/3] Add Support for MCAN in AM654x-idk Faiz Abbas
2020-02-17 14:28 ` [PATCH v2 1/3] dt-bindings: m_can: Add Documentation for transceiver regulator Faiz Abbas
2020-02-19 20:35 ` Rob Herring
2020-02-21 8:31 ` Faiz Abbas
2020-02-21 8:31 ` Marc Kleine-Budde
2020-02-26 9:10 ` Faiz Abbas
2020-03-02 8:16 ` Faiz Abbas
2020-03-09 14:30 ` Faiz Abbas
2020-02-17 14:28 ` Faiz Abbas [this message]
2020-02-17 15:10 ` [PATCH v2 2/3] can: m_can: m_can_platform: Add support for enabling transceiver Dan Murphy
2020-02-21 7:54 ` Faiz Abbas
2020-02-21 8:09 ` Marc Kleine-Budde
2020-02-17 14:28 ` [PATCH v2 3/3] arm64: defconfig: Add Support for Bosch M_CAN controllers Faiz Abbas
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