From: Hans de Goede <hdegoede@redhat.com>
Date: Mon, 29 Apr 2019 15:01:35 +0000 (+0200)
Subject: platform/x86: pmc_atom: Add Lex 3I380D industrial PC to critclk_systems DMI table
X-Git-Tag: v4.19.53~32
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fkernel%2Fstable.git;a=commitdiff_plain;h=1a80d9ff8253fc575263fa0e7cf29f805da63a7f

platform/x86: pmc_atom: Add Lex 3I380D industrial PC to critclk_systems DMI table

[ 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>
---

diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c
index c7039f52ad518..a311f48ce7c9f 100644
--- a/drivers/platform/x86/pmc_atom.c
+++ b/drivers/platform/x86/pmc_atom.c
@@ -398,12 +398,21 @@ 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*/ }
 };