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Commit ababd52c authored by Ramprasad Katkam's avatar Ramprasad Katkam
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asoc: bolero: set slew rate for tx & rx soundwire pads 



Set recommended slew rate settings for tx and rx soundwire
pads.

Change-Id: I5c9803465f3b56af74f36b035225ede428705cbb
Signed-off-by: default avatarRamprasad Katkam <katkam@codeaurora.org>
parent 438488dc

asoc/codecs/bolero/bolero-cdc.c

+27 −0
Original line number Diff line number Diff line
@@ -859,6 +859,8 @@ static int bolero_probe(struct platform_device *pdev) 
	struct bolero_priv *priv;

	u32 num_macros = 0;

	int ret;

	u32 slew_reg1 = 0, slew_reg2 = 0;

	char __iomem *slew_io_base1 = NULL, *slew_io_base2 = NULL;



	priv = devm_kzalloc(&pdev->dev, sizeof(struct bolero_priv),

			    GFP_KERNEL);
@@ -903,6 +905,31 @@ static int bolero_probe(struct platform_device *pdev) 
	dev_set_drvdata(&pdev->dev, priv);

	mutex_init(&priv->io_lock);

	mutex_init(&priv->clk_lock);



	ret = of_property_read_u32(pdev->dev.of_node, "slew_rate_reg1",

				   &slew_reg1);

	ret |= of_property_read_u32(pdev->dev.of_node, "slew_rate_reg2",

				   &slew_reg2);



	if (!ret) {

		slew_io_base1 = devm_ioremap(&pdev->dev, slew_reg1, 0x4);

		if (!slew_io_base1) {

			dev_err(&pdev->dev, "%s: ioremap failed for slew reg 1\n",

				__func__);

			return -ENOMEM;

		}



		slew_io_base2 = devm_ioremap(&pdev->dev, slew_reg2, 0x4);

		if (!slew_io_base2) {

			dev_err(&pdev->dev, "%s: ioremap failed for slew reg 2\n",

				__func__);

			return -ENOMEM;

		}



		/* update slew rate for tx/rx swr interface */

		iowrite32(0x3333, slew_io_base1);

		iowrite32(0xF, slew_io_base2);

	}

	INIT_WORK(&priv->bolero_add_child_devices_work,

		  bolero_add_child_devices);

	schedule_work(&priv->bolero_add_child_devices_work);