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layerscape: add support for fixed-link on RGMII interfaces

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This is required on the Traverse LS1043 boards to support SFP
and xDSL plug-ins.

This will not be needed on kernel 4.14.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
This commit is contained in:
Mathew McBride 2018-04-17 09:45:11 +10:00 committed by John Crispin
parent 40120ca670
commit 2203815f05
1 changed files with 62 additions and 0 deletions
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62
target/linux/layerscape/patches-4.9/820-rgmii-fixed-link.patch Normal file
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@ -0,0 +1,62 @@
From f27ef8941ca29b2d10428754be51e8ee06bb1263 Mon Sep 17 00:00:00 2001
From: Mathew McBride <matt@traverse.com.au>
Date: Mon, 7 Aug 2017 10:19:48 +1000
Subject: [PATCH] Recognize when an RGMII Link is set as fixed (in the device
tree) and set up the MAC accordingly
---
drivers/net/ethernet/freescale/sdk_dpaa/mac.c | 1 +
.../ethernet/freescale/sdk_fman/Peripherals/FM/MAC/memac.c | 13 +++++++++++++
2 files changed, 14 insertions(+)
--- a/drivers/net/ethernet/freescale/sdk_dpaa/mac.c
+++ b/drivers/net/ethernet/freescale/sdk_dpaa/mac.c
@@ -386,6 +386,7 @@ static int __cold mac_probe(struct platf
mac_dev->fixed_link->duplex = phy->duplex;
mac_dev->fixed_link->pause = phy->pause;
mac_dev->fixed_link->asym_pause = phy->asym_pause;
+ printk(KERN_INFO "Setting up fixed link, speed %d duplex %d\n", mac_dev->fixed_link->speed, mac_dev->fixed_link->duplex);
}
_errno = mac_dev->init(mac_dev);
--- a/drivers/net/ethernet/freescale/sdk_fman/Peripherals/FM/MAC/memac.c
+++ b/drivers/net/ethernet/freescale/sdk_fman/Peripherals/FM/MAC/memac.c
@@ -36,6 +36,8 @@
@Description FM mEMAC driver
*//***************************************************************************/
+#include <../../../../sdk_dpaa/mac.h>
+#include <linux/phy_fixed.h>
#include "std_ext.h"
#include "string_ext.h"
@@ -48,6 +50,8 @@
#include "memac.h"
+static t_Error MemacAdjustLink(t_Handle h_Memac, e_EnetSpeed speed, bool fullDuplex);
+
/*****************************************************************************/
/* Internal routines */
/*****************************************************************************/
@@ -276,11 +280,20 @@ static t_Error MemacEnable(t_Handle h_Me
{
t_Memac *p_Memac = (t_Memac *)h_Memac;
+ struct mac_device *mac_dev = (struct mac_device *)p_Memac->h_App;
+
SANITY_CHECK_RETURN_ERROR(p_Memac, E_INVALID_HANDLE);
SANITY_CHECK_RETURN_ERROR(!p_Memac->p_MemacDriverParam, E_INVALID_STATE);
fman_memac_enable(p_Memac->p_MemMap, (mode & e_COMM_MODE_RX), (mode & e_COMM_MODE_TX));
+ if (ENET_INTERFACE_FROM_MODE(p_Memac->enetMode) == e_ENET_IF_RGMII) {
+ if (mac_dev->fixed_link) {
+ printk("This is a fixed-link, forcing speed %d duplex %d\n",mac_dev->fixed_link->speed,mac_dev->fixed_link->duplex);
+ MemacAdjustLink(h_Memac,mac_dev->fixed_link->speed,mac_dev->fixed_link->duplex);
+ }
+ }
+
return E_OK;
}