From 4611d5bab26f93471b84f6f33967cef69b3f723a Mon Sep 17 00:00:00 2001 From: Sergey Alyoshin Date: Tue, 17 Dec 2013 23:24:54 +0400 Subject: [PATCH] arm: mx5: Add fuse supply enable in fsl_iim MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit Enable fuse supply before fuse programming and disable after. Signed-off-by: Sergey Alyoshin Reviewed-by: Benoît Thébaudeau --- arch/arm/cpu/armv7/mx5/clock.c | 12 ++++++++++++ arch/arm/include/asm/arch-mx5/clock.h | 1 + arch/arm/include/asm/arch-mx5/crm_regs.h | 3 +++ drivers/misc/fsl_iim.c | 13 ++++++++++++- 4 files changed, 28 insertions(+), 1 deletion(-) diff --git a/arch/arm/cpu/armv7/mx5/clock.c b/arch/arm/cpu/armv7/mx5/clock.c index fb3b128199..bf52f0d19e 100644 --- a/arch/arm/cpu/armv7/mx5/clock.c +++ b/arch/arm/cpu/armv7/mx5/clock.c @@ -749,6 +749,18 @@ void enable_nfc_clk(unsigned char enable) MXC_CCM_CCGR5_EMI_ENFC(cg)); } +#ifdef CONFIG_FSL_IIM +void enable_efuse_prog_supply(bool enable) +{ + if (enable) + setbits_le32(&mxc_ccm->cgpr, + MXC_CCM_CGPR_EFUSE_PROG_SUPPLY_GATE); + else + clrbits_le32(&mxc_ccm->cgpr, + MXC_CCM_CGPR_EFUSE_PROG_SUPPLY_GATE); +} +#endif + /* Config main_bus_clock for periphs */ static int config_periph_clk(u32 ref, u32 freq) { diff --git a/arch/arm/include/asm/arch-mx5/clock.h b/arch/arm/include/asm/arch-mx5/clock.h index 9ee79aede3..3db4112d1f 100644 --- a/arch/arm/include/asm/arch-mx5/clock.h +++ b/arch/arm/include/asm/arch-mx5/clock.h @@ -53,5 +53,6 @@ void enable_usboh3_clk(bool enable); void mxc_set_sata_internal_clock(void); int enable_i2c_clk(unsigned char enable, unsigned i2c_num); void enable_nfc_clk(unsigned char enable); +void enable_efuse_prog_supply(bool enable); #endif /* __ASM_ARCH_CLOCK_H */ diff --git a/arch/arm/include/asm/arch-mx5/crm_regs.h b/arch/arm/include/asm/arch-mx5/crm_regs.h index 392881c0e7..efe57e07ea 100644 --- a/arch/arm/include/asm/arch-mx5/crm_regs.h +++ b/arch/arm/include/asm/arch-mx5/crm_regs.h @@ -305,6 +305,9 @@ struct mxc_ccm_reg { /* Define the bits in register CCDR */ #define MXC_CCM_CCDR_IPU_HS_MASK (0x1 << 17) +/* Define the bits in register CGPR */ +#define MXC_CCM_CGPR_EFUSE_PROG_SUPPLY_GATE (1 << 4) + /* Define the bits in register CCGRx */ #define MXC_CCM_CCGR_CG_MASK 0x3 #define MXC_CCM_CCGR_CG_OFF 0x0 diff --git a/drivers/misc/fsl_iim.c b/drivers/misc/fsl_iim.c index 44ae7b1028..36433a74f8 100644 --- a/drivers/misc/fsl_iim.c +++ b/drivers/misc/fsl_iim.c @@ -16,6 +16,9 @@ #ifndef CONFIG_MPC512X #include #endif +#if defined(CONFIG_MX51) || defined(CONFIG_MX53) +#include +#endif /* FSL IIM-specific constants */ #define STAT_BUSY 0x80 @@ -93,6 +96,10 @@ struct fsl_iim { } bank[8]; }; +#if !defined(CONFIG_MX51) && !defined(CONFIG_MX53) +#define enable_efuse_prog_supply(enable) +#endif + static int prepare_access(struct fsl_iim **regs, u32 bank, u32 word, int assert, const char *caller) { @@ -237,12 +244,16 @@ int fuse_prog(u32 bank, u32 word, u32 val) if (ret) return ret; + enable_efuse_prog_supply(1); for (bit = 0; val; bit++, val >>= 1) if (val & 0x01) { ret = prog_bit(regs, bank, word, bit); - if (ret) + if (ret) { + enable_efuse_prog_supply(0); return ret; + } } + enable_efuse_prog_supply(0); return 0; } -- 2.39.5