linux-kernel - [PATCH v2 2/3] clk: xilinx: vcu: don't set pll

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Message-ID: <20250102170359.761670-3-rohit.visavalia@amd.com>
Date: Thu, 2 Jan 2025 09:03:58 -0800
From: Rohit Visavalia <rohit.visavalia@....com>
To: <mturquette@...libre.com>, <sboyd@...nel.org>, <michal.simek@....com>,
	<vishal.sagar@....com>
CC: <javier.carrasco.cruz@...il.com>, <geert+renesas@...der.be>,
	<u.kleine-koenig@...libre.com>, <linux-clk@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <linux-kernel@...r.kernel.org>, Rohit
 Visavalia <rohit.visavalia@....com>
Subject: [PATCH v2 2/3] clk: xilinx: vcu: don't set pll_ref as parent of VCU(enc/dec) clocks

CCF will try to adjust parent clock to set desire clock frequency of
child clock. So if pll_ref is not a fixed-clock then while setting rate
of enc/dec clocks pll_ref may get change, which may make VCU malfunction.

Signed-off-by: Rohit Visavalia <rohit.visavalia@....com>
---
Changes in v2:
  - none
  - Link to v1: https://lore.kernel.org/linux-clk/20241226122023.3439559-3-rohit.visavalia@amd.com
---
 drivers/clk/xilinx/xlnx_vcu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/xilinx/xlnx_vcu.c b/drivers/clk/xilinx/xlnx_vcu.c
index 88b3fd8250c2..c520ae1ba65e 100644
--- a/drivers/clk/xilinx/xlnx_vcu.c
+++ b/drivers/clk/xilinx/xlnx_vcu.c
@@ -547,7 +547,7 @@ static int xvcu_register_clock_provider(struct xvcu_device *xvcu)
 		return PTR_ERR(hw);
 	xvcu->pll_post = hw;
 
-	parent_data[0].fw_name = "pll_ref";
+	parent_data[0].fw_name = "dummy_name";
 	parent_data[1].hw = xvcu->pll_post;
 
 	hws[CLK_XVCU_ENC_CORE] =
-- 
2.25.1