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b53: improve overriding CPU port state on BCM5301X 

On BCM5301X there are two different cases to handle: CPU port 8 vs. any
other one. Support for CPU port 8 was already partially implemented but
it lacked setting some extra bit for 2G speed. It also will need to be
extended to implement "SMP dual core 3 GMAC setup". That's the reason
for handling it in separated code block.
This patch also adds overriding CPU port state for port other than 8. It
requires using recently defined GMII_PORT registers.
It was tested for regressions on BCM53011 revs 2 & 3. It was also
confirmed to fix switch on some internal Broadcom board.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Acked-by: Jonas Gorski <jogo@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45402 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Rafał Miłecki 2015-04-12 20:00:42 +00:00
parent c00c6ea570
commit 53f674d8d6
2 changed files with 30 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
target/linux/generic/files/drivers/net/phy/b53/b53_common.c
View File

@ -480,6 +480,7 @@ static void b53_switch_reset_gpio(struct b53_device *dev)
static int b53_switch_reset(struct b53_device *dev)
{
u8 cpu_port = dev->sw_dev.cpu_port;
u8 mgmt;
b53_switch_reset_gpio(dev);
@ -525,8 +526,7 @@ static int b53_switch_reset(struct b53_device *dev)
return -EINVAL;
}
}
} else if ((is531x5(dev) || is5301x(dev)) &&
dev->sw_dev.cpu_port == B53_CPU_PORT) {
} else if (is531x5(dev) && cpu_port == B53_CPU_PORT) {
u8 mii_port_override;
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
@ -534,6 +534,33 @@ static int b53_switch_reset(struct b53_device *dev)
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
mii_port_override | PORT_OVERRIDE_EN |
PORT_OVERRIDE_LINK);
} else if (is5301x(dev)) {
if (cpu_port == 8) {
u8 mii_port_override;
b53_read8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
&mii_port_override);
mii_port_override |= PORT_OVERRIDE_LINK |
PORT_OVERRIDE_RX_FLOW |
PORT_OVERRIDE_TX_FLOW |
PORT_OVERRIDE_SPEED_2000M |
PORT_OVERRIDE_EN;
b53_write8(dev, B53_CTRL_PAGE, B53_PORT_OVERRIDE_CTRL,
mii_port_override);
/* TODO: Ports 5 & 7 require some extra handling */
} else {
u8 po_reg = B53_GMII_PORT_OVERRIDE_CTRL(cpu_port);
u8 gmii_po;
b53_read8(dev, B53_CTRL_PAGE, po_reg, &gmii_po);
gmii_po |= GMII_PO_LINK |
GMII_PO_RX_FLOW |
GMII_PO_TX_FLOW |
GMII_PO_EN |
GMII_PO_SPEED_2000M;
b53_write8(dev, B53_CTRL_PAGE, po_reg, gmii_po);
}
}
b53_enable_mib(dev);

1
target/linux/generic/files/drivers/net/phy/b53/b53_regs.h
View File

@ -86,6 +86,7 @@
#define PORT_OVERRIDE_RV_MII_25 BIT(4) /* BCM5325 only */
#define PORT_OVERRIDE_RX_FLOW BIT(4)
#define PORT_OVERRIDE_TX_FLOW BIT(5)
#define PORT_OVERRIDE_SPEED_2000M BIT(6) /* BCM5301X only, requires setting 1000M */
#define PORT_OVERRIDE_EN BIT(7) /* Use the register contents */
/* Power-down mode control */