openwrt/target/linux/generic/backport-5.15/743-v6.3-0005-net-dsa-b53-mmap-add-phy-ops.patch
Álvaro Fernández Rojas fdc8573587 kernel: backport upstreamed DSA B53 MMAP patch
Move the patch from pending to backport, since it has been accepted upstream:
45977e58ce

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
2023-04-01 22:39:35 +02:00

50 lines
1.5 KiB
Diff

From 45977e58ce65ed0459edc9a0466d9dfea09463f5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=81lvaro=20Fern=C3=A1ndez=20Rojas?= <noltari@gmail.com>
Date: Thu, 23 Mar 2023 20:48:41 +0100
Subject: [PATCH] net: dsa: b53: mmap: add phy ops
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Implement phy_read16() and phy_write16() ops for B53 MMAP to avoid accessing
B53_PORT_MII_PAGE registers which hangs the device.
This access should be done through the MDIO Mux bus controller.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
drivers/net/dsa/b53/b53_mmap.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
--- a/drivers/net/dsa/b53/b53_mmap.c
+++ b/drivers/net/dsa/b53/b53_mmap.c
@@ -216,6 +216,18 @@ static int b53_mmap_write64(struct b53_d
return 0;
}
+static int b53_mmap_phy_read16(struct b53_device *dev, int addr, int reg,
+ u16 *value)
+{
+ return -EIO;
+}
+
+static int b53_mmap_phy_write16(struct b53_device *dev, int addr, int reg,
+ u16 value)
+{
+ return -EIO;
+}
+
static const struct b53_io_ops b53_mmap_ops = {
.read8 = b53_mmap_read8,
.read16 = b53_mmap_read16,
@@ -227,6 +239,8 @@ static const struct b53_io_ops b53_mmap_
.write32 = b53_mmap_write32,
.write48 = b53_mmap_write48,
.write64 = b53_mmap_write64,
+ .phy_read16 = b53_mmap_phy_read16,
+ .phy_write16 = b53_mmap_phy_write16,
};
static int b53_mmap_probe_of(struct platform_device *pdev,