linux-kernel - [PATCH v3 3/3] i3c: dw: Add optional apb clock

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Date: Fri, 28 Jun 2024 15:46:18 +0000
From: Aniket <aniketmaurya@...gle.com>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>, Jeremy Kerr <jk@...econstruct.com.au>, 
	Joel Stanley <joel@....id.au>, Billy Tsai <billy_tsai@...eedtech.com>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc: linux-i3c@...ts.infradead.org, linux-kernel@...r.kernel.org, 
	devicetree@...r.kernel.org, Aniket <aniketmaurya@...gle.com>
Subject: [PATCH v3 3/3] i3c: dw: Add optional apb clock

Besides the core clock, IP also has an apb interface clock.
Add an optional hook for the same.

Signed-off-by: Aniket <aniketmaurya@...gle.com>
---
 drivers/i3c/master/dw-i3c-master.c | 4 ++++
 drivers/i3c/master/dw-i3c-master.h | 1 +
 2 files changed, 5 insertions(+)

diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c
index 4e3335641dcd..0ca41782f3a6 100644
--- a/drivers/i3c/master/dw-i3c-master.c
+++ b/drivers/i3c/master/dw-i3c-master.c
@@ -1454,6 +1454,10 @@ int dw_i3c_common_probe(struct dw_i3c_master *master,
 	if (IS_ERR(master->core_clk))
 		return PTR_ERR(master->core_clk);
 
+	master->pclk = devm_clk_get_optional_enabled(&pdev->dev, "pclk");
+	if (IS_ERR(master->pclk))
+		return PTR_ERR(master->pclk);
+
 	master->core_rst = devm_reset_control_get_optional_exclusive(&pdev->dev,
 								    "core_rst");
 	if (IS_ERR(master->core_rst))
diff --git a/drivers/i3c/master/dw-i3c-master.h b/drivers/i3c/master/dw-i3c-master.h
index 7e76ca381d9f..fb7121c6c687 100644
--- a/drivers/i3c/master/dw-i3c-master.h
+++ b/drivers/i3c/master/dw-i3c-master.h
@@ -36,6 +36,7 @@ struct dw_i3c_master {
 	void __iomem *regs;
 	struct reset_control *core_rst;
 	struct clk *core_clk;
+	struct clk *pclk;
 	char version[5];
 	char type[5];
 	u32 sir_rej_mask;
-- 
2.45.2.803.g4e1b14247a-goog