From 2cc1aa2e0010249fe671e38eb412d0cbefb0bf73 Mon Sep 17 00:00:00 2001
From: Stefan Roese <sr@denx.de>
Date: Mon, 29 Jun 2015 14:58:12 +0200
Subject: [PATCH] block: ahci: Don't enable port interrupts
This patch changes the initialization of the AHCI controller to not
enable the default interrupts (DEF_PORT_IRQ). As interrupts are
not used in U-Boot in general, this should not break the common AHCI
driver operation.
This change is needed to support the Marvell Armada 38x AHCI
controller. With interrupts enabled, this results in timeouts in
ahci_device_data_io(). Not enabling these interrupts fixes this
problem and the common AHCI driver works fine.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Luka Perkov <luka.perkov@sartura.hr>
---
drivers/block/ahci.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/block/ahci.c b/drivers/block/ahci.c
index 4fb846ad37..9bab0fce4e 100644
--- a/drivers/block/ahci.c
+++ b/drivers/block/ahci.c
@@ -299,9 +299,6 @@ static int ahci_host_init(struct ahci_probe_ent *probe_ent)
writel(1 << i, mmio + HOST_IRQ_STAT);
- /* set irq mask (enables interrupts) */
- writel(DEF_PORT_IRQ, port_mmio + PORT_IRQ_MASK);
-
/* register linkup ports */
tmp = readl(port_mmio + PORT_SCR_STAT);
debug("SATA port %d status: 0x%x\n", i, tmp);
--
2.39.5