linux-kernel - [PATCH 3/4] ASoC: fsl_xcvr: Support reparent pll clocks for phy

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Message-Id: <1715223460-32662-4-git-send-email-shengjiu.wang@nxp.com>
Date: Thu,  9 May 2024 10:57:39 +0800
From: Shengjiu Wang <shengjiu.wang@....com>
To: lgirdwood@...il.com,
	broonie@...nel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	shengjiu.wang@...il.com,
	linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Xiubo.Lee@...il.com,
	festevam@...il.com,
	nicoleotsuka@...il.com,
	perex@...ex.cz,
	tiwai@...e.com,
	alsa-devel@...a-project.org,
	linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH 3/4] ASoC: fsl_xcvr: Support reparent pll clocks for phy_clk

When there are 'pll8k' and 'pll11k' clock existing, the clock
source of 'phy_clk' can be changed for different sample rate
requirement.

Signed-off-by: Shengjiu Wang <shengjiu.wang@....com>
---
 sound/soc/fsl/fsl_xcvr.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index c46f64557a7f..0ffa10e924ef 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -15,6 +15,7 @@
 #include <sound/pcm_params.h>
 
 #include "fsl_xcvr.h"
+#include "fsl_utils.h"
 #include "imx-pcm.h"
 
 #define FSL_XCVR_CAPDS_SIZE	256
@@ -33,6 +34,8 @@ struct fsl_xcvr {
 	struct clk *pll_ipg_clk;
 	struct clk *phy_clk;
 	struct clk *spba_clk;
+	struct clk *pll8k_clk;
+	struct clk *pll11k_clk;
 	struct reset_control *reset;
 	u8 streams;
 	u32 mode;
@@ -362,6 +365,8 @@ static int fsl_xcvr_en_aud_pll(struct fsl_xcvr *xcvr, u32 freq)
 
 	freq = xcvr->soc_data->spdif_only ? freq / 5 : freq;
 	clk_disable_unprepare(xcvr->phy_clk);
+	fsl_asoc_reparent_pll_clocks(dev, xcvr->phy_clk,
+				     xcvr->pll8k_clk, xcvr->pll11k_clk, freq);
 	ret = clk_set_rate(xcvr->phy_clk, freq);
 	if (ret < 0) {
 		dev_err(dev, "Error while setting AUD PLL rate: %d\n", ret);
@@ -1287,6 +1292,9 @@ static int fsl_xcvr_probe(struct platform_device *pdev)
 		return PTR_ERR(xcvr->pll_ipg_clk);
 	}
 
+	fsl_asoc_get_pll_clocks(dev, &xcvr->pll8k_clk,
+				&xcvr->pll11k_clk);
+
 	xcvr->ram_addr = devm_platform_ioremap_resource_byname(pdev, "ram");
 	if (IS_ERR(xcvr->ram_addr))
 		return PTR_ERR(xcvr->ram_addr);
-- 
2.34.1