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| author | Barry Song <Baohua.Song@csr.com> | 2011-09-15 19:16:28 -0700 |
|---|---|---|
| committer | Barry Song <Barry.Song@csr.com> | 2011-10-24 02:54:21 -0700 |
| commit | 917d853564530dd5e73c8c1604e823465ff9b713 (patch) | |
| tree | a3163bda42777b827d0678cd3d02d69ec811d63f /arch/arm | |
| parent | 1e11bec9b09a28f81dd3173fec6b1c6c56b5e299 (diff) | |
| download | linux-3.10-917d853564530dd5e73c8c1604e823465ff9b713.tar.gz linux-3.10-917d853564530dd5e73c8c1604e823465ff9b713.tar.bz2 linux-3.10-917d853564530dd5e73c8c1604e823465ff9b713.zip | |
ARM: CSR: call l2x0_of_init to init L2 cache of SiRFprimaII
Cc: Rob Herring <robherring2@gmail.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/boot/dts/prima2-cb.dts | 5 | ||||
| -rw-r--r-- | arch/arm/mach-prima2/l2x0.c | 46 |
2 files changed, 13 insertions, 38 deletions
diff --git a/arch/arm/boot/dts/prima2-cb.dts b/arch/arm/boot/dts/prima2-cb.dts index 17b6737c4ee..34ae3a64ba2 100644 --- a/arch/arm/boot/dts/prima2-cb.dts +++ b/arch/arm/boot/dts/prima2-cb.dts @@ -39,9 +39,12 @@ ranges = <0x40000000 0x40000000 0x80000000>; l2-cache-controller@80040000 { - compatible = "arm,pl310-cache"; + compatible = "arm,pl310-cache", "sirf,prima2-pl310-cache"; reg = <0x80040000 0x1000>; interrupts = <59>; + arm,tag-latency = <1 1 1>; + arm,data-latency = <1 1 1>; + arm,filter-ranges = <0 0x40000000>; }; intc: interrupt-controller@80020000 { diff --git a/arch/arm/mach-prima2/l2x0.c b/arch/arm/mach-prima2/l2x0.c index 9cda2057bcf..c99837797d7 100644 --- a/arch/arm/mach-prima2/l2x0.c +++ b/arch/arm/mach-prima2/l2x0.c @@ -8,52 +8,24 @@ #include <linux/init.h> #include <linux/kernel.h> -#include <linux/io.h> -#include <linux/errno.h> #include <linux/of.h> -#include <linux/of_address.h> #include <asm/hardware/cache-l2x0.h> -#include <mach/memory.h> -#define L2X0_ADDR_FILTERING_START 0xC00 -#define L2X0_ADDR_FILTERING_END 0xC04 - -static struct of_device_id l2x_ids[] = { - { .compatible = "arm,pl310-cache" }, +static struct of_device_id prima2_l2x0_ids[] = { + { .compatible = "sirf,prima2-pl310-cache" }, + {}, }; -static int __init sirfsoc_of_l2x_init(void) +static int __init sirfsoc_l2x0_init(void) { struct device_node *np; - void __iomem *sirfsoc_l2x_base; - - np = of_find_matching_node(NULL, l2x_ids); - if (!np) - panic("unable to find compatible l2x node in dtb\n"); - - sirfsoc_l2x_base = of_iomap(np, 0); - if (!sirfsoc_l2x_base) - panic("unable to map l2x cpu registers\n"); - - of_node_put(np); - - if (!(readl_relaxed(sirfsoc_l2x_base + L2X0_CTRL) & 1)) { - /* - * set the physical memory windows L2 cache will cover - */ - writel_relaxed(PLAT_PHYS_OFFSET + 1024 * 1024 * 1024, - sirfsoc_l2x_base + L2X0_ADDR_FILTERING_END); - writel_relaxed(PLAT_PHYS_OFFSET | 0x1, - sirfsoc_l2x_base + L2X0_ADDR_FILTERING_START); - writel_relaxed(0, - sirfsoc_l2x_base + L2X0_TAG_LATENCY_CTRL); - writel_relaxed(0, - sirfsoc_l2x_base + L2X0_DATA_LATENCY_CTRL); + np = of_find_matching_node(NULL, prima2_l2x0_ids); + if (np) { + pr_info("Initializing prima2 L2 cache\n"); + return l2x0_of_init(0x40000, 0); } - l2x0_init((void __iomem *)sirfsoc_l2x_base, 0x00040000, - 0x00000000); return 0; } -early_initcall(sirfsoc_of_l2x_init); +early_initcall(sirfsoc_l2x0_init); |