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From: Daniel Palmer <daniel@thingy.jp>
To: visitorckw@gmail.com, angelo@kernel-space.org, bmeng.cn@gmail.com
Cc: sjg@chromium.org, u-boot@lists.denx.de, Daniel Palmer <daniel@thingy.jp>
Subject: [PATCH v5 3/8] timer: goldfish: Use __raw_readl()
Date: Thu, 16 Apr 2026 18:39:22 +0900	[thread overview]
Message-ID: <20260416093927.602613-4-daniel@thingy.jp> (raw)
In-Reply-To: <20260416093927.602613-1-daniel@thingy.jp>

From: Kuan-Wei Chiu <visitorckw@gmail.com>

The Goldfish timer registers are native endian, so they act as
big-endian on the m68k virt machine. Currently, this driver uses
readl(), which works by luck because it's currently broken on m68k.

Use __raw_readl() instead to avoid breaking this driver when the
endianness of readl() is fixed.

Signed-off-by: Kuan-Wei Chiu <visitorckw@gmail.com>
Tested-by: Daniel Palmer <daniel@thingy.jp>
Signed-off-by: Daniel Palmer <daniel@thingy.jp>
---
 drivers/timer/goldfish_timer.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/timer/goldfish_timer.c b/drivers/timer/goldfish_timer.c
index 70673bbd93c2..91277d7932ac 100644
--- a/drivers/timer/goldfish_timer.c
+++ b/drivers/timer/goldfish_timer.c
@@ -31,8 +31,8 @@ static u64 goldfish_timer_get_count(struct udevice *dev)
 	 * We must read LOW before HIGH to latch the high 32-bit value
 	 * and ensure a consistent 64-bit timestamp.
 	 */
-	low = readl(priv->base + TIMER_TIME_LOW);
-	high = readl(priv->base + TIMER_TIME_HIGH);
+	low = __raw_readl(priv->base + TIMER_TIME_LOW);
+	high = __raw_readl(priv->base + TIMER_TIME_HIGH);
 
 	time = ((u64)high << 32) | low;
 
-- 
2.51.0


  parent reply	other threads:[~2026-04-16  9:40 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-04-16  9:39 [PATCH v5 0/8] Add virtio-mmio support to m68k virt machine Daniel Palmer
2026-04-16  9:39 ` [PATCH v5 1/8] sysreset: qemu virt: Use __raw_writel() Daniel Palmer
2026-04-16  9:39 ` [PATCH v5 2/8] rtc: goldfish: Use __raw_readl() and __raw_writel() Daniel Palmer
2026-04-16  9:39 ` Daniel Palmer [this message]
2026-04-16  9:39 ` [PATCH v5 4/8] m68k: Fix writew(), writel(), readw(), readl() endianness for classic m68k Daniel Palmer
2026-04-16  9:39 ` [PATCH v5 5/8] virtio: mmio: Allow instantiation via platform data Daniel Palmer
2026-04-16  9:39 ` [PATCH v5 6/8] virtio: cmd: Depend on VIRTIO_BLK Daniel Palmer
2026-04-16  9:39 ` [PATCH v5 7/8] virtio: blk: Fix converting the vendor id to a string Daniel Palmer
2026-04-16  9:39 ` [PATCH v5 8/8] board: qemu: m68k: Create virtio mmio instances Daniel Palmer
2026-04-19  1:33 ` [PATCH v5 0/8] Add virtio-mmio support to m68k virt machine Daniel Palmer

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