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From: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
To: gregkh@linuxfoundation.org
Cc: linux-kernel@vger.kernel.org,
	Lucas Stach <l.stach@pengutronix.de>,
	Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Subject: [PATCH 05/10] nvmem: imx-ocotp: reset error status on probe
Date: Tue, 29 Oct 2019 11:42:35 +0000	[thread overview]
Message-ID: <20191029114240.14905-6-srinivas.kandagatla@linaro.org> (raw)
In-Reply-To: <20191029114240.14905-1-srinivas.kandagatla@linaro.org>

From: Lucas Stach <l.stach@pengutronix.de>

If software running before the OCOTP driver is loaded left the
controller with the error status pending, the driver will never
be able to complete the read timing setup. Reset the error status
on probe to make sure the controller is in usable state.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
---
 drivers/nvmem/imx-ocotp.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/nvmem/imx-ocotp.c b/drivers/nvmem/imx-ocotp.c
index dff2f3c357f5..fc40555ca4cd 100644
--- a/drivers/nvmem/imx-ocotp.c
+++ b/drivers/nvmem/imx-ocotp.c
@@ -521,6 +521,10 @@ static int imx_ocotp_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->clk))
 		return PTR_ERR(priv->clk);
 
+	clk_prepare_enable(priv->clk);
+	imx_ocotp_clr_err_if_set(priv->base);
+	clk_disable_unprepare(priv->clk);
+
 	priv->params = of_device_get_match_data(&pdev->dev);
 	imx_ocotp_nvmem_config.size = 4 * priv->params->nregs;
 	imx_ocotp_nvmem_config.dev = dev;
-- 
2.21.0


  parent reply	other threads:[~2019-10-29 11:43 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-29 11:42 [PATCH 00/10] nvmem: patches(set 1) for 5.5 Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 01/10] nvmem: core: fix nvmem_cell_write inline function Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 02/10] nvmem: sc27xx: Change to use devm_hwspin_lock_request_specific() to request one hwlock Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 03/10] nvmem: imx: scu: support hole region check Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 04/10] nvmem: imx: scu: support write Srinivas Kandagatla
2019-10-29 11:42 ` Srinivas Kandagatla [this message]
2019-10-29 11:42 ` [PATCH 06/10] dt-bindings: nvmem: Add Spreadtrum eFuse controller documentation Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 07/10] nvmem: sprd: Add Spreadtrum SoCs eFuse support Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 08/10] nvmem: imx: scu: fix dependency in Kconfig Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 09/10] dt-bindings: nvmem: add binding for Rockchip OTP controller Srinivas Kandagatla
2019-10-29 11:42 ` [PATCH 10/10] nvmem: add Rockchip OTP driver Srinivas Kandagatla

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