linux-kernel - [PATCH] clk: renesas: rzv2h-cpg: Fix missing CLK_SET_RATE

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Message-ID: <20250609140341.235919-1-prabhakar.mahadev-lad.rj@bp.renesas.com>
Date: Mon,  9 Jun 2025 15:03:41 +0100
From: Prabhakar <prabhakar.csengg@...il.com>
To: Geert Uytterhoeven <geert+renesas@...der.be>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>
Cc: linux-renesas-soc@...r.kernel.org,
	linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Prabhakar <prabhakar.csengg@...il.com>,
	Biju Das <biju.das.jz@...renesas.com>,
	Fabrizio Castro <fabrizio.castro.jz@...esas.com>,
	Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
Subject: [PATCH] clk: renesas: rzv2h-cpg: Fix missing CLK_SET_RATE_PARENT flag for ddiv clocks

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>

Commit bc4d25fdfadf ("clk: renesas: rzv2h: Add support for dynamic
switching divider clocks") missed setting the `CLK_SET_RATE_PARENT`
flag when registering ddiv clocks.

Without this flag, rate changes to the divider clock do not propagate
to its parent, potentially resulting in incorrect clock configurations.

Fix this by setting `CLK_SET_RATE_PARENT` in the clock init data.

Fixes: bc4d25fdfadfa ("clk: renesas: rzv2h: Add support for dynamic switching divider clocks")
Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...renesas.com>
---
 drivers/clk/renesas/rzv2h-cpg.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/renesas/rzv2h-cpg.c b/drivers/clk/renesas/rzv2h-cpg.c
index 2f045acc5080..761da3bf77ce 100644
--- a/drivers/clk/renesas/rzv2h-cpg.c
+++ b/drivers/clk/renesas/rzv2h-cpg.c
@@ -383,6 +383,7 @@ rzv2h_cpg_ddiv_clk_register(const struct cpg_core_clk *core,
 		init.ops = &rzv2h_ddiv_clk_divider_ops;
 	init.parent_names = &parent_name;
 	init.num_parents = 1;
+	init.flags = CLK_SET_RATE_PARENT;
 
 	ddiv->priv = priv;
 	ddiv->mon = cfg_ddiv.monbit;
-- 
2.49.0