diff options
Diffstat (limited to 'drivers/misc/mxc_ocotp.c')
| -rw-r--r-- | drivers/misc/mxc_ocotp.c | 52 |
1 files changed, 46 insertions, 6 deletions
diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c index 6b8566c8d02..8a100c19bdc 100644 --- a/drivers/misc/mxc_ocotp.c +++ b/drivers/misc/mxc_ocotp.c @@ -18,6 +18,7 @@ #include <asm/io.h> #include <asm/arch/clock.h> #include <asm/arch/imx-regs.h> +#include <asm/imx-common/sys_proto.h> #define BO_CTRL_WR_UNLOCK 16 #define BM_CTRL_WR_UNLOCK 0xffff0000 @@ -61,6 +62,8 @@ #define FUSE_BANK_SIZE 0x80 #ifdef CONFIG_MX6SL #define FUSE_BANKS 8 +#elif defined(CONFIG_MX6ULL) +#define FUSE_BANKS 9 #else #define FUSE_BANKS 16 #endif @@ -72,11 +75,11 @@ #endif #if defined(CONFIG_MX6) -#include <asm/arch/sys_proto.h> /* * There is a hole in shadow registers address map of size 0x100 - * between bank 5 and bank 6 on iMX6QP, iMX6DQ, iMX6SDL, iMX6SX and iMX6UL. + * between bank 5 and bank 6 on iMX6QP, iMX6DQ, iMX6SDL, iMX6SX, + * iMX6UL and i.MX6ULL. * Bank 5 ends at 0x6F0 and Bank 6 starts at 0x800. When reading the fuses, * we should account for this hole in address space. * @@ -97,7 +100,10 @@ u32 fuse_bank_physical(int index) if (is_mx6sl()) { phy_index = index; - } else if (is_mx6ul()) { + } else if (is_mx6ul() || is_mx6ull()) { + if (is_mx6ull() && index == 8) + index = 7; + if (index >= 6) phy_index = fuse_bank_physical(5) + (index - 6) + 3; else @@ -112,11 +118,27 @@ u32 fuse_bank_physical(int index) } return phy_index; } + +u32 fuse_word_physical(u32 bank, u32 word_index) +{ + if (is_mx6ull()) { + if (bank == 8) + word_index = word_index + 4; + } + + return word_index; +} #else u32 fuse_bank_physical(int index) { return index; } + +u32 fuse_word_physical(u32 bank, u32 word_index) +{ + return word_index; +} + #endif static void wait_busy(struct ocotp_regs *regs, unsigned int delay_us) @@ -142,6 +164,14 @@ static int prepare_access(struct ocotp_regs **regs, u32 bank, u32 word, return -EINVAL; } + if (is_mx6ull()) { + if ((bank == 7 || bank == 8) && + word >= ARRAY_SIZE((*regs)->bank[0].fuse_regs) >> 3) { + printf("mxc_ocotp %s(): Invalid argument on 6ULL\n", caller); + return -EINVAL; + } + } + enable_ocotp_clk(1); wait_busy(*regs, 1); @@ -176,14 +206,16 @@ int fuse_read(u32 bank, u32 word, u32 *val) struct ocotp_regs *regs; int ret; u32 phy_bank; + u32 phy_word; ret = prepare_read(®s, bank, word, val, __func__); if (ret) return ret; phy_bank = fuse_bank_physical(bank); + phy_word = fuse_word_physical(bank, word); - *val = readl(®s->bank[phy_bank].fuse_regs[word << 2]); + *val = readl(®s->bank[phy_bank].fuse_regs[phy_word << 2]); return finish_access(regs, __func__); } @@ -237,7 +269,13 @@ static void setup_direct_access(struct ocotp_regs *regs, u32 bank, u32 word, #ifdef CONFIG_MX7 u32 addr = bank; #else - u32 addr = bank << 3 | word; + u32 addr; + /* Bank 7 and Bank 8 only supports 4 words each for i.MX6ULL */ + if ((is_mx6ull()) && (bank > 7)) { + bank = bank - 1; + word += 4; + } + addr = bank << 3 | word; #endif set_timing(regs); @@ -325,14 +363,16 @@ int fuse_override(u32 bank, u32 word, u32 val) struct ocotp_regs *regs; int ret; u32 phy_bank; + u32 phy_word; ret = prepare_write(®s, bank, word, __func__); if (ret) return ret; phy_bank = fuse_bank_physical(bank); + phy_word = fuse_word_physical(bank, word); - writel(val, ®s->bank[phy_bank].fuse_regs[word << 2]); + writel(val, ®s->bank[phy_bank].fuse_regs[phy_word << 2]); return finish_access(regs, __func__); } |