platform/x86/intel/sdsi: Change mailbox timeout

On some platforms, it may take up to 400ms for the ready bit to be set in a
successful mailbox transaction. Set the timeout to 500ms to cover the worst
case.

Signed-off-by: David E. Box <david.e.box@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Link: https://lore.kernel.org/r/20230413013230.1521584-1-david.e.box@linux.intel.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>

diff --git a/drivers/platform/x86/intel/sdsi.c b/drivers/platform/x86/intel/sdsi.c
index 9e0ea2c..556e7c6 100644 (file)
--- a/drivers/platform/x86/intel/sdsi.c
+++ b/drivers/platform/x86/intel/sdsi.c
@@ -49,7 +49,7 @@
 #define SDSI_MBOX_CMD_SUCCESS          0x40
 #define SDSI_MBOX_CMD_TIMEOUT          0x80
 
-#define MBOX_TIMEOUT_US                        2000
+#define MBOX_TIMEOUT_US                        500000
 #define MBOX_TIMEOUT_ACQUIRE_US                1000
 #define MBOX_POLLING_PERIOD_US         100
 #define MBOX_ACQUIRE_NUM_RETRIES       5