linux-kernel - [PATCH v4 09/10] mtd: rawnand: davinci: Add clock resource

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Message-ID: <20241115132631.264609-10-bastien.curutchet@bootlin.com>
Date: Fri, 15 Nov 2024 14:26:30 +0100
From: Bastien Curutchet <bastien.curutchet@...tlin.com>
To: Santosh Shilimkar <ssantosh@...nel.org>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	Miquel Raynal <miquel.raynal@...tlin.com>,
	Richard Weinberger <richard@....at>,
	Vignesh Raghavendra <vigneshr@...com>
Cc: linux-kernel@...r.kernel.org,
	linux-mtd@...ts.infradead.org,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	Herve Codina <herve.codina@...tlin.com>,
	Christopher Cordahi <christophercordahi@...ometrics.ca>,
	Bastien Curutchet <bastien.curutchet@...tlin.com>
Subject: [PATCH v4 09/10] mtd: rawnand: davinci: Add clock resource

NAND controller has a reference clock inherited from the AEMIF
(cf. Documentation/devicetree/bindings/memory-controllers/ti-aemif.txt)
This clock isn't used yet by the driver.

Add a struct clock in the struct davinci_nand_info so it can be used
to compute timings.

Signed-off-by: Bastien Curutchet <bastien.curutchet@...tlin.com>
---
 drivers/mtd/nand/raw/davinci_nand.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mtd/nand/raw/davinci_nand.c b/drivers/mtd/nand/raw/davinci_nand.c
index 3c0efbdd789e..563045c7ce08 100644
--- a/drivers/mtd/nand/raw/davinci_nand.c
+++ b/drivers/mtd/nand/raw/davinci_nand.c
@@ -10,6 +10,7 @@
  *   Dirk Behme <Dirk.Behme@...il.com>
  */
 
+#include <linux/clk.h>
 #include <linux/err.h>
 #include <linux/iopoll.h>
 #include <linux/kernel.h>
@@ -117,6 +118,8 @@ struct davinci_nand_info {
 	uint32_t		mask_cle;
 
 	uint32_t		core_chipsel;
+
+	struct clk		*clk;
 };
 
 static DEFINE_SPINLOCK(davinci_nand_lock);
@@ -822,6 +825,10 @@ static int nand_davinci_probe(struct platform_device *pdev)
 		return -EADDRNOTAVAIL;
 	}
 
+	info->clk = devm_clk_get_enabled(&pdev->dev, "aemif");
+	if (IS_ERR(info->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->clk), "failed to get clock");
+
 	info->pdev		= pdev;
 	info->base		= base;
 	info->vaddr		= vaddr;
-- 
2.47.0