linux-kernel - [PATCH] dma: qcom: Add initialization of axi and core clocks

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Message-Id: <20160830154223.15129-1-voker57@gmail.com>
Date:   Tue, 30 Aug 2016 18:42:23 +0300
From:   Iaroslav Gridin <voker57@...il.com>
To:     vinod.koul@...el.com
Cc:     dan.j.williams@...el.com, andy.gross@...aro.org,
        stanimir.varbanov@...aro.org, pramod.gurav@...aro.org,
        arnd@...db.de, okaya@...eaurora.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org, Voker57 <voker57@...il.com>
Subject: [PATCH] dma: qcom: Add initialization of axi and core clocks

From: Voker57 <voker57@...il.com>

These initialization are missing and causing bam not to init
Signed-off-by: Iaroslav Gridin <voker57@...il.com>
---
 drivers/dma/qcom/bam_dma.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/drivers/dma/qcom/bam_dma.c b/drivers/dma/qcom/bam_dma.c
index 03c4eb3..faae0c8 100644
--- a/drivers/dma/qcom/bam_dma.c
+++ b/drivers/dma/qcom/bam_dma.c
@@ -395,6 +395,8 @@ struct bam_device {
 	const struct reg_offset_data *layout;
 
 	struct clk *bamclk;
+	struct clk *axi_clk;
+	struct clk *core_clk;
 	int irq;
 
 	/* dma start transaction tasklet */
@@ -1189,6 +1191,25 @@ static int bam_dma_probe(struct platform_device *pdev)
 		return ret;
 	}
 
+	bdev->axi_clk = devm_clk_get(bdev->dev, "axi_clk");
+	if (IS_ERR(bdev->axi_clk))
+		bdev->axi_clk = NULL;
+
+	ret = clk_prepare_enable(bdev->axi_clk);
+	if (ret) {
+		dev_err(bdev->dev, "failed to prepare/enable axi clock\n");
+		return ret;
+	}
+
+	bdev->core_clk = devm_clk_get(bdev->dev, "core_clk");
+	if (IS_ERR(bdev->core_clk))
+		bdev->core_clk = NULL;
+
+	ret = clk_prepare_enable(bdev->core_clk);
+	if (ret) {
+		dev_err(bdev->dev, "failed to prepare/enable core clock\n");
+		return ret;
+	}
 	ret = bam_init(bdev);
 	if (ret)
 		goto err_disable_clk;
-- 
2.9.3