From 95d6c74627c7a27fe9f5244fcdd9265722c80268 Mon Sep 17 00:00:00 2001
From: Solomon Peachy <pizza@shaftnet.org>
Date: Tue, 16 Jul 2024 11:44:11 -0400
Subject: [PATCH] ata:  Use PIO0 when ATA_SET_PIO_TIMING is not defined

If we have no way to tell the controller what timing to use, go with
the slowest possible speed.

Change-Id: I1ed3474d8bfecc08cfe4a9e7667f57775fef4d43
---
 firmware/drivers/ata.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/firmware/drivers/ata.c b/firmware/drivers/ata.c
index d82fb173cc..93d53cbfce 100644
--- a/firmware/drivers/ata.c
+++ b/firmware/drivers/ata.c
@@ -1102,8 +1102,10 @@ static int set_features(void)
         { 82, 6, 0xaa, 0 },    /* enable read look-ahead */
     };
     int i;
-    int pio_mode = 2; /* Lowest */
+    int pio_mode = 0;
 
+#ifdef ATA_SET_PIO_TIMING
+    pio_mode = 2;
     /* Find out the highest supported PIO mode */
     if (identify_info[53] & (1<<1)) {  /* Is word 64 valid? */
       if (identify_info[64] & 2)
@@ -1111,6 +1113,7 @@ static int set_features(void)
       else if(identify_info[64] & 1)
         pio_mode = 3;
     }
+#endif
 
     /* Update the table: set highest supported pio mode that we also support */
     features[0].parameter = 8 + pio_mode;