diff options
Diffstat (limited to 'arch/arm/mach-kirkwood/board-dt.c')
| -rw-r--r-- | arch/arm/mach-kirkwood/board-dt.c | 103 |
1 files changed, 80 insertions, 23 deletions
diff --git a/arch/arm/mach-kirkwood/board-dt.c b/arch/arm/mach-kirkwood/board-dt.c index 82d3ad8e87cf..9caa4fe95913 100644 --- a/arch/arm/mach-kirkwood/board-dt.c +++ b/arch/arm/mach-kirkwood/board-dt.c @@ -13,9 +13,10 @@ #include <linux/kernel.h> #include <linux/init.h> #include <linux/of.h> +#include <linux/of_address.h> +#include <linux/of_net.h> #include <linux/of_platform.h> #include <linux/clk-provider.h> -#include <linux/clocksource.h> #include <linux/dma-mapping.h> #include <linux/irqchip.h> #include <linux/kexec.h> @@ -44,14 +45,6 @@ static void __init kirkwood_legacy_clk_init(void) clkspec.np = np; clkspec.args_count = 1; - clkspec.args[0] = CGC_BIT_PEX0; - orion_clkdev_add("0", "pcie", - of_clk_get_from_provider(&clkspec)); - - clkspec.args[0] = CGC_BIT_PEX1; - orion_clkdev_add("1", "pcie", - of_clk_get_from_provider(&clkspec)); - /* * The ethernet interfaces forget the MAC address assigned by * u-boot if the clocks are turned off. Until proper DT support @@ -66,17 +59,83 @@ static void __init kirkwood_legacy_clk_init(void) clk_prepare_enable(clk); } -static void __init kirkwood_dt_time_init(void) -{ - of_clk_init(NULL); - clocksource_of_init(); -} +#define MV643XX_ETH_MAC_ADDR_LOW 0x0414 +#define MV643XX_ETH_MAC_ADDR_HIGH 0x0418 -static void __init kirkwood_dt_init_early(void) +static void __init kirkwood_dt_eth_fixup(void) { - mvebu_mbus_init("marvell,kirkwood-mbus", - BRIDGE_WINS_BASE, BRIDGE_WINS_SZ, - DDR_WINDOW_CPU_BASE, DDR_WINDOW_CPU_SZ); + struct device_node *np; + + /* + * The ethernet interfaces forget the MAC address assigned by u-boot + * if the clocks are turned off. Usually, u-boot on kirkwood boards + * has no DT support to properly set local-mac-address property. + * As a workaround, we get the MAC address from mv643xx_eth registers + * and update the port device node if no valid MAC address is set. + */ + for_each_compatible_node(np, NULL, "marvell,kirkwood-eth-port") { + struct device_node *pnp = of_get_parent(np); + struct clk *clk; + struct property *pmac; + void __iomem *io; + u8 *macaddr; + u32 reg; + + if (!pnp) + continue; + + /* skip disabled nodes or nodes with valid MAC address*/ + if (!of_device_is_available(pnp) || of_get_mac_address(np)) + goto eth_fixup_skip; + + clk = of_clk_get(pnp, 0); + if (IS_ERR(clk)) + goto eth_fixup_skip; + + io = of_iomap(pnp, 0); + if (!io) + goto eth_fixup_no_map; + + /* ensure port clock is not gated to not hang CPU */ + clk_prepare_enable(clk); + + /* store MAC address register contents in local-mac-address */ + pr_err(FW_INFO "%s: local-mac-address is not set\n", + np->full_name); + + pmac = kzalloc(sizeof(*pmac) + 6, GFP_KERNEL); + if (!pmac) + goto eth_fixup_no_mem; + + pmac->value = pmac + 1; + pmac->length = 6; + pmac->name = kstrdup("local-mac-address", GFP_KERNEL); + if (!pmac->name) { + kfree(pmac); + goto eth_fixup_no_mem; + } + + macaddr = pmac->value; + reg = readl(io + MV643XX_ETH_MAC_ADDR_HIGH); + macaddr[0] = (reg >> 24) & 0xff; + macaddr[1] = (reg >> 16) & 0xff; + macaddr[2] = (reg >> 8) & 0xff; + macaddr[3] = reg & 0xff; + + reg = readl(io + MV643XX_ETH_MAC_ADDR_LOW); + macaddr[4] = (reg >> 8) & 0xff; + macaddr[5] = reg & 0xff; + + of_update_property(np, pmac); + +eth_fixup_no_mem: + iounmap(io); + clk_disable_unprepare(clk); +eth_fixup_no_map: + clk_put(clk); +eth_fixup_skip: + of_node_put(pnp); + } } static void __init kirkwood_dt_init(void) @@ -92,16 +151,16 @@ static void __init kirkwood_dt_init(void) writel(readl(CPU_CONFIG) & ~CPU_CONFIG_ERROR_PROP, CPU_CONFIG); BUG_ON(mvebu_mbus_dt_init()); - kirkwood_setup_wins(); kirkwood_l2_init(); kirkwood_cpufreq_init(); - + kirkwood_cpuidle_init(); /* Setup clocks for legacy devices */ kirkwood_legacy_clk_init(); - kirkwood_cpuidle_init(); + kirkwood_pm_init(); + kirkwood_dt_eth_fixup(); #ifdef CONFIG_KEXEC kexec_reinit = kirkwood_enable_pcie; @@ -121,8 +180,6 @@ static const char * const kirkwood_dt_board_compat[] = { DT_MACHINE_START(KIRKWOOD_DT, "Marvell Kirkwood (Flattened Device Tree)") /* Maintainer: Jason Cooper <jason@lakedaemon.net> */ .map_io = kirkwood_map_io, - .init_early = kirkwood_dt_init_early, - .init_time = kirkwood_dt_time_init, .init_machine = kirkwood_dt_init, .restart = kirkwood_restart, .dt_compat = kirkwood_dt_board_compat, |