cros_ec: Increase command timeout for flash erase

Erasing the flash can take over a second on some devices and the EC is
not responsive during this time. Update the timeout to 5 seconds to cope
with this.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/drivers/misc/cros_ec_lpc.c b/drivers/misc/cros_ec_lpc.c
index 63702f9..e0002b9 100644 (file)
--- a/drivers/misc/cros_ec_lpc.c
+++ b/drivers/misc/cros_ec_lpc.c
@@ -25,13 +25,16 @@
 #define debug_trace(fmt, b...)
 #endif
 
+/* Timeout waiting for a flash erase command to complete */
+static const int CROS_EC_CMD_TIMEOUT_MS = 5000;
+
 static int wait_for_sync(struct cros_ec_dev *dev)
 {
        unsigned long start;
 
        start = get_timer(0);
        while (inb(EC_LPC_ADDR_HOST_CMD) & EC_LPC_STATUS_BUSY_MASK) {
-               if (get_timer(start) > 1000) {
+               if (get_timer(start) > CROS_EC_CMD_TIMEOUT_MS) {
                        debug("%s: Timeout waiting for CROS_EC sync\n",
                              __func__);
                        return -1;