[coreboot-gerrit] Patch set updated for coreboot: sb/amd/sp5100: Disable ASF legacy sensor support per RPR v3.02

[Timothy Pearson (tpearson@raptorengineeringinc.com)]

Timothy Pearson (tpearson at raptorengineeringinc.com) just uploaded a new patch set to gerrit, which you can find at https://review.coreboot.org/14306

-gerrit

commit 1819b263b24511168cd47a14ebf5a1be52832f5b
Author: Timothy Pearson <tpearson at raptorengineeringinc.com>
Date:   Sun Apr 10 15:45:17 2016 -0500

    sb/amd/sp5100: Disable ASF legacy sensor support per RPR v3.02
    
    Change-Id: I8628dc433e12892b0839d727165f609c8b34f66e
    Signed-off-by: Timothy Pearson <tpearson at raptorengineeringinc.com>
---
 src/southbridge/amd/sb700/early_setup.c | 9 ++++++++-
 src/southbridge/amd/sb700/smbus.h       | 1 +
 2 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/src/southbridge/amd/sb700/early_setup.c b/src/southbridge/amd/sb700/early_setup.c
index ffdd34b..32234e2 100644
--- a/src/southbridge/amd/sb700/early_setup.c
+++ b/src/southbridge/amd/sb700/early_setup.c
@@ -399,8 +399,15 @@ static void sb700_devices_por_init(void)
 	if (inb(SMBUS_IO_BASE) == 0xff)
 		printk(BIOS_INFO, "%s: Primary SMBUS controller I/O not found\n", __func__);
 
-	if (inb(SMBUS_AUX_IO_BASE) == 0xff)
+	if (inb(SMBUS_AUX_IO_BASE) == 0xff) {
 		printk(BIOS_INFO, "%s: Secondary SMBUS controller I/O not found\n", __func__);
+	}
+	else {
+		if (IS_ENABLED(CONFIG_SOUTHBRIDGE_AMD_SUBTYPE_SP5100))
+			/* Disable legacy sensor support / reset ASF Slave state machine per RPR 2.27 step 3 */
+			outb(0x40, SMBUS_AUX_IO_BASE + SMBSLVMISC);
+		}
+	}
 
 	/* KB2RstEnable */
 	pci_write_config8(dev, 0x40, 0x44);
diff --git a/src/southbridge/amd/sb700/smbus.h b/src/southbridge/amd/sb700/smbus.h
index 0e6b7b8..1b90091 100644
--- a/src/southbridge/amd/sb700/smbus.h
+++ b/src/southbridge/amd/sb700/smbus.h
@@ -37,6 +37,7 @@
 #define SMBSLVCMD_SHADOW 0x9
 #define SMBSLVEVT 0xa
 #define SMBSLVDAT 0xc
+#define SMBSLVMISC 0xd
 
 #define AX_INDXC  0
 #define AX_INDXP  1