linux-kernel - [PATCH 2/3] soc: mediatek: pwrap: add support for sys & tmr clocks

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Message-Id: <20220530135522.762560-2-fparent@baylibre.com>
Date:   Mon, 30 May 2022 15:55:21 +0200
From:   Fabien Parent <fparent@...libre.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
Cc:     Fabien Parent <fparent@...libre.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 2/3] soc: mediatek: pwrap: add support for sys & tmr clocks

MT8365 requires an extra 2 clocks to be enabled to behave correctly.
Add support these 2 clocks, they are made optional since they seem to
be present only on MT8365.

Signed-off-by: Fabien Parent <fparent@...libre.com>
---
 drivers/soc/mediatek/mtk-pmic-wrap.c | 36 ++++++++++++++++++++++++----
 1 file changed, 32 insertions(+), 4 deletions(-)

diff --git a/drivers/soc/mediatek/mtk-pmic-wrap.c b/drivers/soc/mediatek/mtk-pmic-wrap.c
index bf39a64f3ecc..8dea5e14d73e 100644
--- a/drivers/soc/mediatek/mtk-pmic-wrap.c
+++ b/drivers/soc/mediatek/mtk-pmic-wrap.c
@@ -1163,6 +1163,8 @@ struct pmic_wrapper {
 	const struct pwrap_slv_type *slave;
 	struct clk *clk_spi;
 	struct clk *clk_wrap;
+	struct clk *clk_sys;
+	struct clk *clk_tmr;
 	struct reset_control *rstc;
 
 	struct reset_control *rstc_bridge;
@@ -2250,6 +2252,20 @@ static int pwrap_probe(struct platform_device *pdev)
 		return PTR_ERR(wrp->clk_wrap);
 	}
 
+	wrp->clk_sys = devm_clk_get_optional(wrp->dev, "sys");
+	if (IS_ERR(wrp->clk_sys)) {
+		return dev_err_probe(wrp->dev, PTR_ERR(wrp->clk_sys),
+				     "failed to get clock: %pe\n",
+				     wrp->clk_sys);
+	}
+
+	wrp->clk_tmr = devm_clk_get_optional(wrp->dev, "tmr");
+	if (IS_ERR(wrp->clk_tmr)) {
+		return dev_err_probe(wrp->dev, PTR_ERR(wrp->clk_tmr),
+				     "failed to get clock: %pe\n",
+				     wrp->clk_tmr);
+	}
+
 	ret = clk_prepare_enable(wrp->clk_spi);
 	if (ret)
 		return ret;
@@ -2258,6 +2274,14 @@ static int pwrap_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_out1;
 
+	ret = clk_prepare_enable(wrp->clk_sys);
+	if (ret)
+		goto err_out2;
+
+	ret = clk_prepare_enable(wrp->clk_tmr);
+	if (ret)
+		goto err_out3;
+
 	/* Enable internal dynamic clock */
 	if (HAS_CAP(wrp->master->caps, PWRAP_CAP_DCM)) {
 		pwrap_writel(wrp, 1, PWRAP_DCM_EN);
@@ -2272,7 +2296,7 @@ static int pwrap_probe(struct platform_device *pdev)
 		ret = pwrap_init(wrp);
 		if (ret) {
 			dev_dbg(wrp->dev, "init failed with %d\n", ret);
-			goto err_out2;
+			goto err_out4;
 		}
 	}
 
@@ -2286,7 +2310,7 @@ static int pwrap_probe(struct platform_device *pdev)
 	if (!(pwrap_readl(wrp, PWRAP_WACS2_RDATA) & mask_done)) {
 		dev_dbg(wrp->dev, "initialization isn't finished\n");
 		ret = -ENODEV;
-		goto err_out2;
+		goto err_out4;
 	}
 
 	/* Initialize watchdog, may not be done by the bootloader */
@@ -2319,7 +2343,7 @@ static int pwrap_probe(struct platform_device *pdev)
 			       IRQF_TRIGGER_HIGH,
 			       "mt-pmic-pwrap", wrp);
 	if (ret)
-		goto err_out2;
+		goto err_out4;
 
 	wrp->regmap = devm_regmap_init(wrp->dev, NULL, wrp, wrp->slave->regmap);
 	if (IS_ERR(wrp->regmap)) {
@@ -2331,11 +2355,15 @@ static int pwrap_probe(struct platform_device *pdev)
 	if (ret) {
 		dev_dbg(wrp->dev, "failed to create child devices at %pOF\n",
 				np);
-		goto err_out2;
+		goto err_out4;
 	}
 
 	return 0;
 
+err_out4:
+	clk_disable_unprepare(wrp->clk_tmr);
+err_out3:
+	clk_disable_unprepare(wrp->clk_sys);
 err_out2:
 	clk_disable_unprepare(wrp->clk_wrap);
 err_out1:
-- 
2.36.1