linux-kernel - [PATCH] clk: samsung: fsd: Mark PLL_CAM

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20240917101016.23238-1-inbaraj.e@samsung.com>
Date: Tue, 17 Sep 2024 15:40:16 +0530
From: Inbaraj E <inbaraj.e@...sung.com>
To: krzk@...nel.org, s.nawrocki@...sung.com, cw00.choi@...sung.com,
	alim.akhtar@...sung.com, mturquette@...libre.com, sboyd@...nel.org,
	linux-samsung-soc@...r.kernel.org, linux-clk@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: pankaj.dubey@...sung.com, gost.dev@...sung.com, Inbaraj E
	<inbaraj.e@...sung.com>
Subject: [PATCH] clk: samsung: fsd: Mark PLL_CAM_CSI as critical

PLL_CAM_CSI is the parent clock for the ACLK and PCLK in the CMU_CAM_CSI
block. When we gate ACLK or PCLK, the clock framework will subsequently
disables the parent clocks(PLL_CAM_CSI). Disabling PLL_CAM_CSI is causing
sytem level halt.

It was observed on FSD SoC, when we gate the ACLK and PCLK during CSI stop
streaming through pm_runtime_put system is getting halted. So marking
PLL_CAM_CSI as critical to prevent disabling.

Signed-off-by: Inbaraj E <inbaraj.e@...sung.com>
---
 drivers/clk/samsung/clk-fsd.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/samsung/clk-fsd.c b/drivers/clk/samsung/clk-fsd.c
index 6f984cfcd33c..b1764aab9429 100644
--- a/drivers/clk/samsung/clk-fsd.c
+++ b/drivers/clk/samsung/clk-fsd.c
@@ -1637,8 +1637,9 @@ static const struct samsung_pll_rate_table pll_cam_csi_rate_table[] __initconst
 };
 
 static const struct samsung_pll_clock cam_csi_pll_clks[] __initconst = {
-	PLL(pll_142xx, 0, "fout_pll_cam_csi", "fin_pll",
-	    PLL_LOCKTIME_PLL_CAM_CSI, PLL_CON0_PLL_CAM_CSI, pll_cam_csi_rate_table),
+	__PLL(pll_142xx, 0, "fout_pll_cam_csi", "fin_pll",
+		CLK_GET_RATE_NOCACHE | CLK_IS_CRITICAL, PLL_LOCKTIME_PLL_CAM_CSI,
+		PLL_CON0_PLL_CAM_CSI, pll_cam_csi_rate_table),
 };
 
 PNAME(mout_cam_csi_pll_p) = { "fin_pll", "fout_pll_cam_csi" };
-- 
2.17.1