From: Sascha Hauer <s.hauer@pengutronix.de>
To: Barebox List <barebox@lists.infradead.org>
Cc: Heinrich.Toews@wago.com
Subject: [PATCH] ARM: omap: Wago PFC200: Initialize switch registers
Date: Mon, 28 Jan 2019 15:17:49 +0100 [thread overview]
Message-ID: <20190128141749.19262-1-s.hauer@pengutronix.de> (raw)
The PFC200 has a KSZ886x switch connected. Some of its registers need to
be initialized for proper ehternet support. Add the initialization code.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: Heinrich.Toews@wago.com
---
arch/arm/boards/wago-pfc-am35xx/board.c | 45 +++++++++++++++++++++++++
1 file changed, 45 insertions(+)
diff --git a/arch/arm/boards/wago-pfc-am35xx/board.c b/arch/arm/boards/wago-pfc-am35xx/board.c
index 2bad40912d..c0a039ba50 100644
--- a/arch/arm/boards/wago-pfc-am35xx/board.c
+++ b/arch/arm/boards/wago-pfc-am35xx/board.c
@@ -3,6 +3,7 @@
* Copyright (C) 2014 WAGO Kontakttechnik GmbH & Co. KG <http://global.wago.com>
* Author: Heinrich Toews <heinrich.toews@wago.com>
*/
+#define pr_fmt(fmt) "pfc200: " fmt
#include <common.h>
#include <init.h>
@@ -10,6 +11,8 @@
#include <gpio.h>
#include <linux/sizes.h>
#include <linux/err.h>
+#include <linux/phy.h>
+#include <linux/micrel_phy.h>
#include <asm/memory.h>
#include <mach/generic.h>
@@ -23,6 +26,48 @@ static int pfc200_mem_init(void)
}
mem_initcall(pfc200_mem_init);
+#define BMCR_HP_MDIX 0x20
+
+static int pfc200_phy_fixup(struct mii_bus *mii, int phyadr)
+{
+ struct phy_device *phydev;
+ int ret;
+
+ phydev = mdiobus_scan(mii, phyadr);
+
+ if (IS_ERR(phydev)) {
+ pr_err("Cannot find phydev %d on mii bus\n", phyadr);
+ return PTR_ERR(phydev);
+ }
+
+ ret = phy_write(phydev, MII_BMCR, BMCR_ANENABLE | BMCR_HP_MDIX);
+ if (ret)
+ pr_err("Failed to write to phy: %s\n", strerror(-ret));
+
+ return ret;
+}
+
+static int pfc200_late_init(void)
+{
+ struct mii_bus *mii;
+
+ if (!of_machine_is_compatible("ti,pfc200"))
+ return 0;
+
+ mii = mdiobus_get_bus(0);
+ if (!mii) {
+ pr_err("Cannot find mii bus 0\n");
+ return -ENODEV;
+ }
+
+ pfc200_phy_fixup(mii, 1);
+ pfc200_phy_fixup(mii, 2);
+
+ return 0;
+}
+late_initcall(pfc200_late_init);
+
+
#define GPIO_KSZ886x_RESET 136
static int pfc200_devices_init(void)
--
2.20.1
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
reply other threads:[~2019-01-28 14:17 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190128141749.19262-1-s.hauer@pengutronix.de \
--to=s.hauer@pengutronix.de \
--cc=Heinrich.Toews@wago.com \
--cc=barebox@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox