From: Hao Zhang hzhang@ti.com
This patches enables the On-chip Shared Ram clock domain for K2L SoC.
Signed-off-by: Hao Zhang hzhang@ti.com Signed-off-by: Ivan Khoronzhuk ivan.khoronzhuk@ti.com --- arch/arm/cpu/armv7/keystone/init.c | 49 +++++++++++++++++++++++ arch/arm/include/asm/arch-keystone/hardware-k2l.h | 25 ++++++++++++ arch/arm/include/asm/arch-keystone/hardware.h | 1 + 3 files changed, 75 insertions(+)
diff --git a/arch/arm/cpu/armv7/keystone/init.c b/arch/arm/cpu/armv7/keystone/init.c index a0ecfa2..2228132 100644 --- a/arch/arm/cpu/armv7/keystone/init.c +++ b/arch/arm/cpu/armv7/keystone/init.c @@ -13,6 +13,7 @@ #include <asm/arch/msmc.h> #include <asm/arch/clock.h> #include <asm/arch/hardware.h> +#include <asm/arch/psc_defs.h>
void chip_configuration_unlock(void) { @@ -20,6 +21,53 @@ void chip_configuration_unlock(void) __raw_writel(KS2_KICK1_MAGIC, KS2_KICK1); }
+#ifdef CONFIG_SOC_K2L +void osr_init(void) +{ + u32 i; + u32 j; + u32 val; + u32 base = KS2_OSR_CFG_BASE; + u32 ecc_ctrl[KS2_OSR_NUM_RAM_BANKS]; + + /* Enable the OSR clock domain */ + psc_enable_module(KS2_LPSC_OSR); + + /* Disable OSR ECC check for all the ram banks */ + for (i = 0; i < KS2_OSR_NUM_RAM_BANKS; i++) { + val = i | KS2_OSR_ECC_VEC_TRIG_RD | + (KS2_OSR_ECC_CTRL << KS2_OSR_ECC_VEC_RD_ADDR_SH); + + writel(val , base + KS2_OSR_ECC_VEC); + + /** + * wait till read is done. + * Print should be added after earlyprintk support is added. + */ + for (j = 0; j < 10000; j++) { + val = readl(base + KS2_OSR_ECC_VEC); + if (val & KS2_OSR_ECC_VEC_RD_DONE) + break; + } + + ecc_ctrl[i] = readl(base + KS2_OSR_ECC_CTRL) ^ + KS2_OSR_ECC_CTRL_CHK; + + writel(ecc_ctrl[i], KS2_MSMC_DATA_BASE + i * 4); + writel(ecc_ctrl[i], base + KS2_OSR_ECC_CTRL); + } + + /* Reset OSR memory to all zeros */ + for (i = 0; i < KS2_OSR_SIZE; i += 4) + writel(0, KS2_OSR_DATA_BASE + i); + + /* Enable OSR ECC check for all the ram banks */ + for (i = 0; i < KS2_OSR_NUM_RAM_BANKS; i++) + writel(ecc_ctrl[i] | + KS2_OSR_ECC_CTRL_CHK, base + KS2_OSR_ECC_CTRL); +} +#endif + int arch_cpu_init(void) { chip_configuration_unlock(); @@ -34,6 +82,7 @@ int arch_cpu_init(void) #endif #ifdef CONFIG_SOC_K2L msmc_share_all_segments(14); /* PCIE 1 */ + osr_init(); #endif
/* diff --git a/arch/arm/include/asm/arch-keystone/hardware-k2l.h b/arch/arm/include/asm/arch-keystone/hardware-k2l.h index 3402d0c..dfde040 100644 --- a/arch/arm/include/asm/arch-keystone/hardware-k2l.h +++ b/arch/arm/include/asm/arch-keystone/hardware-k2l.h @@ -57,6 +57,31 @@ #define KS2_CIC2_DDR3_ECC_IRQ_NUM 0x0D3 #define KS2_CIC2_DDR3_ECC_CHAN_NUM 0x01D
+/* OSR */ +#define KS2_OSR_DATA_BASE 0x70000000 /* OSR data base */ +#define KS2_OSR_CFG_BASE 0x02348c00 /* OSR config base */ +#define KS2_OSR_ECC_VEC 0x08 /* ECC Vector reg */ +#define KS2_OSR_ECC_CTRL 0x14 /* ECC control reg */ + +/* OSR ECC Vector register */ +#define KS2_OSR_ECC_VEC_TRIG_RD BIT(15) /* trigger a read op */ +#define KS2_OSR_ECC_VEC_RD_DONE BIT(24) /* read complete */ + +#define KS2_OSR_ECC_VEC_RAM_ID_SH 0 /* RAM ID shift */ +#define KS2_OSR_ECC_VEC_RD_ADDR_SH 16 /* read address shift */ + +/* OSR ECC control register */ +#define KS2_OSR_ECC_CTRL_EN BIT(0) /* ECC enable bit */ +#define KS2_OSR_ECC_CTRL_CHK BIT(1) /* ECC check bit */ +#define KS2_OSR_ECC_CTRL_RMW BIT(2) /* ECC check bit */ + +/* Number of OSR RAM banks */ +#define KS2_OSR_NUM_RAM_BANKS 4 + +/* OSR memory size */ +#define KS2_OSR_SIZE 0x100000 + + /* Number of DSP cores */ #define KS2_NUM_DSPS 4
diff --git a/arch/arm/include/asm/arch-keystone/hardware.h b/arch/arm/include/asm/arch-keystone/hardware.h index 89dce96..2eec4e7 100644 --- a/arch/arm/include/asm/arch-keystone/hardware.h +++ b/arch/arm/include/asm/arch-keystone/hardware.h @@ -161,6 +161,7 @@ typedef volatile unsigned int *dv_reg_p;
/* MSMC control */ #define KS2_MSMC_CTRL_BASE 0x0bc00000 +#define KS2_MSMC_DATA_BASE 0x0c000000
/* USB */ #define KS2_USB_SS_BASE 0x02680000