linux/arch/arm/mach-kirkwood/board-km_kirkwood.c
Valentin Longchamp 0510c8a014 ARM: initial DTS support for km_kirkwood
This is a first attempt to support the km_kirkwood reference design with
a device tree. This km_kirkwood design is present in many Keymile
products. It is based on the Marvell Bobcat SOC which integrates a
Kirkwood CPU next to a big L2 Ethernet Switch. The Kirkwood in the SOC
is very similar to the "normal" one, but there are a few differences.

This initial support is minimal: the kernel can boot with network
(ge0), serial port and NAND functional.

Signed-off-by: Valentin Longchamp <valentin.longchamp@keymile.com>
Cc: Holger Brunck <holger.brunck@keymile.com>
Acked-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
2012-09-21 17:07:17 +00:00

58 lines
1.6 KiB
C

/*
* Copyright 2012 2012 KEYMILE AG, CH-3097 Bern
* Valentin Longchamp <valentin.longchamp@keymile.com>
*
* arch/arm/mach-kirkwood/board-km_kirkwood.c
*
* Keymile km_kirkwood Reference Desing Init for drivers not converted to
* flattened device tree yet.
*
* This file is licensed under the terms of the GNU General Public
* License version 2. This program is licensed "as is" without any
* warranty of any kind, whether express or implied.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/mv643xx_eth.h>
#include <linux/clk.h>
#include <linux/clk-private.h>
#include "common.h"
#include "mpp.h"
static struct mv643xx_eth_platform_data km_kirkwood_ge00_data = {
.phy_addr = MV643XX_ETH_PHY_ADDR(0),
};
static unsigned int km_kirkwood_mpp_config[] __initdata = {
MPP8_GPIO, /* I2C SDA */
MPP9_GPIO, /* I2C SCL */
0
};
void __init km_kirkwood_init(void)
{
struct clk *sata_clk;
/*
* Basic setup. Needs to be called early.
*/
kirkwood_mpp_conf(km_kirkwood_mpp_config);
/*
* Our variant of kirkwood (integrated in the Bobcat) hangs on accessing
* SATA bits (14-15) of the Clock Gating Control Register. Since these
* devices are also not present in this variant, their clocks get
* disabled because unused when clk_disable_unused() gets called.
* That's why we change the flags to these clocks to CLK_IGNORE_UNUSED
*/
sata_clk = clk_get_sys("sata_mv.0", "0");
if (!IS_ERR(sata_clk))
sata_clk->flags |= CLK_IGNORE_UNUSED;
sata_clk = clk_get_sys("sata_mv.0", "1");
if (!IS_ERR(sata_clk))
sata_clk->flags |= CLK_IGNORE_UNUSED;
kirkwood_ehci_init();
kirkwood_ge00_init(&km_kirkwood_ge00_data);
}