linux-kernel - [PATCH] clk: rockchip: mark hclk

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Message-Id: <20250210-rk3568-hclk-vi-v1-1-9ade2626f638@wolfvision.net>
Date: Mon, 10 Feb 2025 09:29:02 +0100
From: Michael Riesch <michael.riesch@...fvision.net>
To: Nicolas Frattaroli <frattaroli.nicolas@...il.com>, 
 Michael Turquette <mturquette@...libre.com>, 
 Stephen Boyd <sboyd@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc: linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 Michael Riesch <michael.riesch@...fvision.net>
Subject: [PATCH] clk: rockchip: mark hclk_vi as critical on rk3568

The clock 'pclk_vi_niu' has a dependency on 'hclk_vi_niu' according
to the Technical Reference Manual section '2.8.6 NIU Clock gating
reliance'. However, this kind of dependency cannot be addressed
properly at the moment (until the support for linked clocks is
implemented for the RK3568).
As an intermediate solution, mark the hclk_vi as critical on the
Rockchip RK3568.

Suggested-by: Nicolas Frattaroli <frattaroli.nicolas@...il.com>
Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
---
 drivers/clk/rockchip/clk-rk3568.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/clk/rockchip/clk-rk3568.c b/drivers/clk/rockchip/clk-rk3568.c
index 53d10b1c627b..7d9279291e76 100644
--- a/drivers/clk/rockchip/clk-rk3568.c
+++ b/drivers/clk/rockchip/clk-rk3568.c
@@ -1602,6 +1602,7 @@ static const char *const rk3568_cru_critical_clocks[] __initconst = {
 	"pclk_php",
 	"hclk_usb",
 	"pclk_usb",
+	"hclk_vi",
 	"hclk_vo",
 };
 

---
base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b
change-id: 20250210-rk3568-hclk-vi-aace45995131

Best regards,
-- 
Michael Riesch <michael.riesch@...fvision.net>