linux-kernel - [PATCH v2 07/17] clk: imx: imx8mp-audiomix: remove sdma root clock

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Date: Fri, 10 May 2024 17:19:02 +0800
From: "Peng Fan (OSS)" <peng.fan@....nxp.com>
To: Abel Vesa <abelvesa@...nel.org>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Shawn Guo <shawnguo@...nel.org>, 
 Sascha Hauer <s.hauer@...gutronix.de>, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, 
 Fabio Estevam <festevam@...il.com>, Jacky Bai <ping.bai@....com>, 
 Ye Li <ye.li@....com>, Dong Aisheng <aisheng.dong@....com>
Cc: linux-clk@...r.kernel.org, imx@...ts.linux.dev, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Abel Vesa <abel.vesa@...aro.org>, Peng Fan <peng.fan@....com>, 
 Shengjiu Wang <shengjiu.wang@....com>
Subject: [PATCH v2 07/17] clk: imx: imx8mp-audiomix: remove sdma root clock

From: Peng Fan <peng.fan@....com>

There is an issue:
SDMA3 can't work without setting AUDIOMIX_CLKEN0[SDMA2] (bit-26) to 1

The workaround is:
As the reset state of AUDIOMIX_CLKEN0[SDMA2] is enabled,
we just need to keep it on as reset state, don't touch it
in kernel, then every thing is same as before, if we register
the clock in clk-audiomix, then kernel will try to disable
it in idle.

Fixes: 6cd95f7b151c ("clk: imx: imx8mp: Add audiomix block control")
Reviewed-by: Shengjiu Wang <shengjiu.wang@....com>
Signed-off-by: Peng Fan <peng.fan@....com>
---
 drivers/clk/imx/clk-imx8mp-audiomix.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/clk/imx/clk-imx8mp-audiomix.c b/drivers/clk/imx/clk-imx8mp-audiomix.c
index b381d6f784c8..88d8ba975b5a 100644
--- a/drivers/clk/imx/clk-imx8mp-audiomix.c
+++ b/drivers/clk/imx/clk-imx8mp-audiomix.c
@@ -172,7 +172,6 @@ static struct clk_imx8mp_audiomix_sel sels[] = {
 	CLK_GATE("ocrama", OCRAMA_IPG),
 	CLK_GATE("aud2htx", AUD2HTX_IPG),
 	CLK_GATE("earc_phy", EARC_PHY),
-	CLK_GATE("sdma2", SDMA2_ROOT),
 	CLK_GATE("sdma3", SDMA3_ROOT),
 	CLK_GATE("spba2", SPBA2_ROOT),
 	CLK_GATE("dsp", DSP_ROOT),

-- 
2.37.1