linux-kernel - [PATCH 2/2] clk: qcom: gcc-x1e80100: Set FORCE MEM CORE for UFS clocks

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-prev] [day] [month] [year] [list]

Message-ID: <20250414-gcc_ufs_mem_core-v1-2-67b5529b9b5d@quicinc.com>
Date: Mon, 14 Apr 2025 14:30:41 +0530
From: Taniya Das <quic_tdas@...cinc.com>
To: Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette
	<mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
CC: Ajit Pandey <quic_ajipan@...cinc.com>,
        Imran Shaik
	<quic_imrashai@...cinc.com>,
        Jagadeesh Kona <quic_jkona@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, Taniya Das <quic_tdas@...cinc.com>
Subject: [PATCH 2/2] clk: qcom: gcc-x1e80100: Set FORCE MEM CORE for UFS
 clocks

Update the force mem core bit for UFS ICE clock and UFS PHY AXI clock to
force the core on signal to remain active during halt state of the clk.
If force mem core bit of the clock is not set, the memories of the
subsystem will not retain the logic across power states. This is
required for the MCQ feature of UFS.

Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
---
 drivers/clk/qcom/gcc-x1e80100.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/clk/qcom/gcc-x1e80100.c b/drivers/clk/qcom/gcc-x1e80100.c
index 009f39139b6440e80fca8f9474be86ca17d9775b..3e44757e25d3245e455918e9474c978c8dacaa5e 100644
--- a/drivers/clk/qcom/gcc-x1e80100.c
+++ b/drivers/clk/qcom/gcc-x1e80100.c
@@ -6753,6 +6753,10 @@ static int gcc_x1e80100_probe(struct platform_device *pdev)
 	/* Clear GDSC_SLEEP_ENA_VOTE to stop votes being auto-removed in sleep. */
 	regmap_write(regmap, 0x52224, 0x0);
 
+	/* FORCE_MEM_CORE_ON for ufs phy ice core and gcc ufs phy axi clocks  */
+	qcom_branch_set_force_mem_core(regmap, gcc_ufs_phy_ice_core_clk, true);
+	qcom_branch_set_force_mem_core(regmap, gcc_ufs_phy_axi_clk, true);
+
 	return qcom_cc_really_probe(&pdev->dev, &gcc_x1e80100_desc, regmap);
 }
 

-- 
2.48.1