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From:   Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To:     linux-kernel@vger.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        stable@vger.kernel.org, Hans de Goede <hdegoede@redhat.com>,
        Andy Shevchenko <andy.shevchenko@gmail.com>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        Sasha Levin <sashal@kernel.org>,
        Semyon Verchenko <semverchenko@factor-ts.ru>
Subject: [PATCH 4.14 33/53] platform/x86: pmc_atom: Add Lex 3I380D industrial PC to critclk_systems DMI table
Date:   Mon, 17 Jun 2019 23:10:16 +0200
Message-Id: <20190617210751.164769195@linuxfoundation.org>
In-Reply-To: <20190617210745.104187490@linuxfoundation.org>
References: <20190617210745.104187490@linuxfoundation.org>
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[ Upstream commit 3d0818f5eba80fbe4c0addbfe6ddb2d19dc82cd4 ]

The Lex 3I380D industrial PC has 4 ethernet controllers on board
which need pmc_plt_clk0 - 3 to function, add it to the critclk_systems
DMI table, so that drivers/clk/x86/clk-pmc-atom.c will mark the clocks
as CLK_CRITICAL and they will not get turned off.

Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Reported-and-tested-by: Semyon Verchenko <semverchenko@factor-ts.ru>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/platform/x86/pmc_atom.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c
index 50f2a125cd2c..e3e1f83a2dd7 100644
--- a/drivers/platform/x86/pmc_atom.c
+++ b/drivers/platform/x86/pmc_atom.c
@@ -428,12 +428,21 @@ static int pmc_dbgfs_register(struct pmc_dev *pmc)
  */
 static const struct dmi_system_id critclk_systems[] = {
 	{
+		/* pmc_plt_clk0 is used for an external HSIC USB HUB */
 		.ident = "MPL CEC1x",
 		.matches = {
 			DMI_MATCH(DMI_SYS_VENDOR, "MPL AG"),
 			DMI_MATCH(DMI_PRODUCT_NAME, "CEC10 Family"),
 		},
 	},
+	{
+		/* pmc_plt_clk0 - 3 are used for the 4 ethernet controllers */
+		.ident = "Lex 3I380D",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "Lex BayTrail"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "3I380D"),
+		},
+	},
 	{ /*sentinel*/ }
 };
 
-- 
2.20.1