linux-kernel - [PATCH] platform/x86: pmc_atom: Add Siemens CONNECT X300 to critclk

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Message-Id: <20191129091650.4765-1-michael.haener@siemens.com>
Date:   Fri, 29 Nov 2019 10:16:49 +0100
From:   Michael Haener <michael.haener@...mens.com>
To:     andy@...radead.org
Cc:     Michael Haener <michael.haener@...mens.com>,
        Darren Hart <dvhart@...radead.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] platform/x86: pmc_atom: Add Siemens CONNECT X300 to critclk_systems DMI table

The CONNECT X300 uses the PMC clock for on-board components and gets
stuck during boot if the clock is disabled. Therefore, add this
device to the critical systems list.
Tested on CONNECT X300.

Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Signed-off-by: Michael Haener <michael.haener@...mens.com>
---
 drivers/platform/x86/pmc_atom.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c
index 07d1b911e72f..57f06ca114a6 100644
--- a/drivers/platform/x86/pmc_atom.c
+++ b/drivers/platform/x86/pmc_atom.c
@@ -429,6 +429,14 @@ static const struct dmi_system_id critclk_systems[] = {
 			DMI_MATCH(DMI_PRODUCT_VERSION, "6AV7882-0"),
 		},
 	},
+	{
+		.ident = "CONNECT X300",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"),
+			DMI_MATCH(DMI_PRODUCT_VERSION, "A5E45074588")
+		},
+	},
+
 	{ /*sentinel*/ }
 };
 
-- 
2.11.0