diff options
author | Shawn Guo <shawn.guo@linaro.org> | 2013-07-08 15:45:20 +0200 |
---|---|---|
committer | Shawn Guo <shawn.guo@linaro.org> | 2013-08-16 07:11:22 +0200 |
commit | e6a07569611daf4190c0fd2c2bb1e2189c0cb479 (patch) | |
tree | 26f52525e498ae233ca0a55a781541ab7aa8d539 | |
parent | ARM: imx_v4_v5_defconfig: Select CONFIG_MACH_IMX25_DT (diff) | |
download | linux-e6a07569611daf4190c0fd2c2bb1e2189c0cb479.tar.xz linux-e6a07569611daf4190c0fd2c2bb1e2189c0cb479.zip |
ARM: imx: let L2 initialization be a common function
Move imx6q L2 initialization function imx6q_init_l2cache() into
system.c, and rename it imx_init_l2cache(), so that other platforms
other than imx6q can also use the function.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
-rw-r--r-- | arch/arm/mach-imx/common.h | 6 | ||||
-rw-r--r-- | arch/arm/mach-imx/mach-imx6q.c | 37 | ||||
-rw-r--r-- | arch/arm/mach-imx/system.c | 33 |
3 files changed, 40 insertions, 36 deletions
diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h index cb6c838b63ed..b96aff7476ea 100644 --- a/arch/arm/mach-imx/common.h +++ b/arch/arm/mach-imx/common.h @@ -161,6 +161,12 @@ extern int mx51_neon_fixup(void); static inline int mx51_neon_fixup(void) { return 0; } #endif +#ifdef CONFIG_CACHE_L2X0 +extern void imx_init_l2cache(void); +#else +static inline void imx_init_l2cache(void) {} +#endif + extern struct smp_operations imx_smp_ops; #endif diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c index 59218418fde3..9f06cc8789c6 100644 --- a/arch/arm/mach-imx/mach-imx6q.c +++ b/arch/arm/mach-imx/mach-imx6q.c @@ -32,7 +32,6 @@ #include <linux/micrel_phy.h> #include <linux/mfd/syscon.h> #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> -#include <asm/hardware/cache-l2x0.h> #include <asm/mach/arch.h> #include <asm/mach/map.h> #include <asm/system_misc.h> @@ -352,44 +351,10 @@ static void __init imx6q_map_io(void) imx_scu_map_io(); } -#ifdef CONFIG_CACHE_L2X0 -static void __init imx6q_init_l2cache(void) -{ - void __iomem *l2x0_base; - struct device_node *np; - unsigned int val; - - np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache"); - if (!np) - goto out; - - l2x0_base = of_iomap(np, 0); - if (!l2x0_base) { - of_node_put(np); - goto out; - } - - /* Configure the L2 PREFETCH and POWER registers */ - val = readl_relaxed(l2x0_base + L2X0_PREFETCH_CTRL); - val |= 0x70800000; - writel_relaxed(val, l2x0_base + L2X0_PREFETCH_CTRL); - val = L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN; - writel_relaxed(val, l2x0_base + L2X0_POWER_CTRL); - - iounmap(l2x0_base); - of_node_put(np); - -out: - l2x0_of_init(0, ~0UL); -} -#else -static inline void imx6q_init_l2cache(void) {} -#endif - static void __init imx6q_init_irq(void) { imx6q_init_revision(); - imx6q_init_l2cache(); + imx_init_l2cache(); imx_src_init(); imx_gpc_init(); irqchip_init(); diff --git a/arch/arm/mach-imx/system.c b/arch/arm/mach-imx/system.c index 6fe81bb4d3c9..e5592cab1f6a 100644 --- a/arch/arm/mach-imx/system.c +++ b/arch/arm/mach-imx/system.c @@ -27,6 +27,7 @@ #include <asm/system_misc.h> #include <asm/proc-fns.h> #include <asm/mach-types.h> +#include <asm/hardware/cache-l2x0.h> #include "common.h" #include "hardware.h" @@ -95,3 +96,35 @@ void __init mxc_arch_reset_init_dt(void) clk_prepare(wdog_clk); } + +#ifdef CONFIG_CACHE_L2X0 +static void __init imx_init_l2cache(void) +{ + void __iomem *l2x0_base; + struct device_node *np; + unsigned int val; + + np = of_find_compatible_node(NULL, NULL, "arm,pl310-cache"); + if (!np) + goto out; + + l2x0_base = of_iomap(np, 0); + if (!l2x0_base) { + of_node_put(np); + goto out; + } + + /* Configure the L2 PREFETCH and POWER registers */ + val = readl_relaxed(l2x0_base + L2X0_PREFETCH_CTRL); + val |= 0x70800000; + writel_relaxed(val, l2x0_base + L2X0_PREFETCH_CTRL); + val = L2X0_DYNAMIC_CLK_GATING_EN | L2X0_STNDBY_MODE_EN; + writel_relaxed(val, l2x0_base + L2X0_POWER_CTRL); + + iounmap(l2x0_base); + of_node_put(np); + +out: + l2x0_of_init(0, ~0UL); +} +#endif |