platform/x86: pmc_atom: Add Siemens SIMATIC IPC227E to critclk_systems DMI table

The SIMATIC IPC227E 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.

Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c
index aa53648..9aca5e7 100644 (file)
--- a/drivers/platform/x86/pmc_atom.c
+++ b/drivers/platform/x86/pmc_atom.c
@@ -415,6 +415,13 @@ static const struct dmi_system_id critclk_systems[] = {
                        DMI_MATCH(DMI_BOARD_NAME, "CB6363"),
                },
        },
+       {
+               .ident = "SIMATIC IPC227E",
+               .matches = {
+                       DMI_MATCH(DMI_SYS_VENDOR, "SIEMENS AG"),
+                       DMI_MATCH(DMI_PRODUCT_VERSION, "6ES7647-8B"),
+               },
+       },
        { /*sentinel*/ }
 };