FAQ: [#6270] Problem with portmuxgroup_check()(2010)

[#6270] Problem with portmuxgroup_check()

Submitted By: Jay Ku

Open Date

2010-09-21 03:33:05

Priority:

Medium Assignee:

steven miao

Status:

Open Fixed In Release:

N/A

Found In Release:

2010R1 Release:

9821M

Category:

N/A Board:

Custom

Processor:

BF537 Silicon Revision:

Is this bug repeatable?:

Yes Resolution:

Fixed

Uboot version or rev.:

Toolchain version or rev.:

4927

App binary format:

N/A

Summary: Problem with portmuxgroup_check()

Details:

portmuxgroup_check() is reporting incorrect conflict when configuring the RMII interface on a BF537. See detail below. Interface configures and works fine if I skip portmuxgroup_check().

I'm having some trouble configuring the MAC on my BF537 board. I'm using SVN ver 9821. When I boot the kernel I get:

bfin-uart: Blackfin serial driver

bfin-uart.0: ttyBF0 at MMIO 0xffc00400 (irq = 18) is a BFIN-UART

brd: module loaded

pin grounp conflict! request pin 37 func 1 conflict with pin 32 func 0

bfin_mii_bus bfin_mii_bus.0: Requesting peripherals failed!

bfin_mii_bus: probe of bfin_mii_bus.0 failed with error -16

bfin_mac bfin_mac.0: Cannot get mii_bus!

rtc-bfin rtc-bfin: rtc core: registered rtc-bfin as rtc0

bfin-wdt: initialized: timeout=20 sec (nowayout=0)

TCP cubic registered

The kernel continues to boot and otherwise runs ok.

I've got pretty much everything disabled in my config. Here's an excerpt from my board config - basically copied this out of the pnav10.c config file, which apparently also uses RMII:

#if defined(CONFIG_BFIN_MAC) || defined(CONFIG_BFIN_MAC_MODULE)

#include <linux/bfin_mac.h>

static const unsigned short bfin_mac_peripherals[] = P_RMII0;

static struct bfin_phydev_platform_data bfin_phydev_data[] = {

{

.addr = 1,

.irq = IRQ_MAC_PHYINT,

// .irq = PHY_POLL, /* IRQ_MAC_PHYINT */

};

static struct bfin_mii_bus_platform_data bfin_mii_bus_data = {

.phydev_number = 1,

.phydev_data = bfin_phydev_data,

.phy_mode = PHY_INTERFACE_MODE_RMII,

.mac_peripherals = bfin_mac_peripherals,

};

static struct platform_device bfin_mii_bus = {

.name = "bfin_mii_bus",

.dev = {

.platform_data = &bfin_mii_bus_data,

}

};

static struct platform_device bfin_mac_device = {

.name = "bfin_mac",

.dev = {

.platform_data = &bfin_mii_bus,

}

};

#endif

Follow-ups

--- steven miao 2010-09-25 22:08:46

bypass the mux group check for those pins has only one function

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