diff options
Diffstat (limited to 'arch/arm/mach-imx/pm-imx6.c')
-rw-r--r-- | arch/arm/mach-imx/pm-imx6.c | 104 |
1 files changed, 97 insertions, 7 deletions
diff --git a/arch/arm/mach-imx/pm-imx6.c b/arch/arm/mach-imx/pm-imx6.c index a2fb714f5777..6703211fc83a 100644 --- a/arch/arm/mach-imx/pm-imx6.c +++ b/arch/arm/mach-imx/pm-imx6.c @@ -91,6 +91,8 @@ #define UART_UBRC 0xac #define UART_UTS 0xb4 +#define IOMUXC_GPR5_CLOCK_AFCG_X_BYPASS_MASK 0xf800 + extern unsigned long iram_tlb_base_addr; extern unsigned long iram_tlb_phys_addr; @@ -421,6 +423,24 @@ static const u32 imx6ul_mmdc_lpddr2_offset[] __initconst = { 0x800, 0x004, 0x01c, }; +static const u32 imx6sll_mmdc_io_offset[] __initconst = { + 0x294, 0x298, 0x29c, 0x2a0, /* DQM0 ~ DQM3 */ + 0x544, 0x54c, 0x554, 0x558, /* GPR_B0DS ~ GPR_B3DS */ + 0x530, 0x540, 0x2ac, 0x52c, /* MODE_CTL, MODE, SDCLK_0, GPR_ADDDS */ + 0x2a4, 0x2a8, /* SDCKE0, SDCKE1*/ +}; + +static const u32 imx6sll_mmdc_lpddr3_offset[] __initconst = { + 0x01c, 0x85c, 0x800, 0x890, + 0x8b8, 0x81c, 0x820, 0x82c, + 0x830, 0x83c, 0x848, 0x850, + 0x8c0, 0x8b8, 0x004, 0x008, + 0x00c, 0x010, 0x038, 0x014, + 0x018, 0x01c, 0x02c, 0x030, + 0x040, 0x000, 0x020, 0x818, + 0x800, 0x004, 0x01c, +}; + static const struct imx6_pm_socdata imx6q_pm_data __initconst = { .mmdc_compat = "fsl,imx6q-mmdc", .src_compat = "fsl,imx6q-src", @@ -509,6 +529,17 @@ static const struct imx6_pm_socdata imx6ul_lpddr2_pm_data __initconst = { .mmdc_offset = imx6ul_mmdc_lpddr2_offset, }; +static const struct imx6_pm_socdata imx6sll_pm_data __initconst = { + .mmdc_compat = "fsl,imx6sll-mmdc", + .src_compat = "fsl,imx6sll-src", + .iomuxc_compat = "fsl,imx6sll-iomuxc", + .gpc_compat = "fsl,imx6sll-gpc", + .mmdc_io_num = ARRAY_SIZE(imx6sll_mmdc_io_offset), + .mmdc_io_offset = imx6sll_mmdc_io_offset, + .mmdc_num = ARRAY_SIZE(imx6sll_mmdc_lpddr3_offset), + .mmdc_offset = imx6sll_mmdc_lpddr3_offset, +}; + static struct map_desc iram_tlb_io_desc __initdata = { /* .virtual and .pfn are run-time assigned */ .length = SZ_1M, @@ -562,7 +593,7 @@ struct imx6_cpu_pm_info { struct imx6_pm_base anatop_base; u32 ttbr1; /* Store TTBR1 */ u32 mmdc_io_num; /* Number of MMDC IOs which need saved/restored. */ - u32 mmdc_io_val[MX6_MAX_MMDC_IO_NUM][2]; /* To save offset and value */ + u32 mmdc_io_val[MX6_MAX_MMDC_IO_NUM][3]; /* To save offset, value, low power settings */ u32 mmdc_num; /* Number of MMDC registers which need saved/restored. */ u32 mmdc_val[MX6_MAX_MMDC_NUM][2]; } __aligned(8); @@ -643,11 +674,18 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode) val |= 0x2 << BP_CLPCR_LPM; val &= ~BM_CLPCR_VSTBY; val &= ~BM_CLPCR_SBYOS; - if (cpu_is_imx6sl() || cpu_is_imx6sx()) + if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6sll()) val |= BM_CLPCR_BYPASS_PMIC_READY; if (cpu_is_imx6sl() || cpu_is_imx6sx() || - cpu_is_imx6ul() || cpu_is_imx6ull()) + cpu_is_imx6ul() || cpu_is_imx6ull() || cpu_is_imx6sll()) val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS; + else if (cpu_is_imx6q() && + imx_mmdc_get_ddr_type() == IMX_DDR_TYPE_LPDDR2 && + imx_mmdc_get_lpddr2_2ch_mode() == IMX_LPDDR2_2CH_MODE) { + /* keep handshake enabled for lpddr2 2ch-mode */ + val &= ~BM_CLPCR_BYP_MMDC_CH0_LPM_HS; + val &= ~BM_CLPCR_BYP_MMDC_CH1_LPM_HS; + } else val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS; break; @@ -661,11 +699,18 @@ int imx6q_set_lpm(enum mxc_cpu_pwr_mode mode) val |= 0x3 << BP_CLPCR_STBY_COUNT; val |= BM_CLPCR_VSTBY; val |= BM_CLPCR_SBYOS; - if (cpu_is_imx6sl() || cpu_is_imx6sx()) + if (cpu_is_imx6sl() || cpu_is_imx6sx() || cpu_is_imx6sll()) val |= BM_CLPCR_BYPASS_PMIC_READY; if (cpu_is_imx6sl() || cpu_is_imx6sx() || - cpu_is_imx6ul() || cpu_is_imx6ull()) + cpu_is_imx6ul() || cpu_is_imx6ull() || cpu_is_imx6sll()) val |= BM_CLPCR_BYP_MMDC_CH0_LPM_HS; + else if (cpu_is_imx6q() && + imx_mmdc_get_ddr_type() == IMX_DDR_TYPE_LPDDR2 && + imx_mmdc_get_lpddr2_2ch_mode() == IMX_LPDDR2_2CH_MODE) { + /* keep handshake enabled for lpddr2 2ch-mode */ + val &= ~BM_CLPCR_BYP_MMDC_CH0_LPM_HS; + val &= ~BM_CLPCR_BYP_MMDC_CH1_LPM_HS; + } else val |= BM_CLPCR_BYP_MMDC_CH1_LPM_HS; break; @@ -825,7 +870,8 @@ static int imx6q_pm_enter(suspend_state_t state) imx6_enable_rbc(true); imx_gpc_pre_suspend(true); imx_anatop_pre_suspend(); - if (cpu_is_imx6ull() && imx_gpc_is_mf_mix_off()) + if ((cpu_is_imx6ull() || cpu_is_imx6sll()) && + imx_gpc_is_mf_mix_off()) imx6_console_save(console_saved_reg); if (cpu_is_imx6sx() && imx_gpc_is_mf_mix_off()) { ccm_ccgr4 = readl_relaxed(ccm_base + CCGR4); @@ -865,7 +911,8 @@ static int imx6q_pm_enter(suspend_state_t state) sizeof(qspi_regs_imx6sx) / sizeof(struct qspi_regs)); } - if (cpu_is_imx6ull() && imx_gpc_is_mf_mix_off()) + if ((cpu_is_imx6ull() || cpu_is_imx6sll()) && + imx_gpc_is_mf_mix_off()) imx6_console_restore(console_saved_reg); if (cpu_is_imx6q() || cpu_is_imx6dl()) imx_smp_prepare(); @@ -1085,6 +1132,20 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata) pm_info->mmdc_io_val[i][1] = readl_relaxed(pm_info->iomuxc_base.vbase + mmdc_io_offset_array[i]); + pm_info->mmdc_io_val[i][2] = 0; + } + + /* i.MX6SLL has no DRAM RESET pin */ + if (cpu_is_imx6sll()) { + pm_info->mmdc_io_val[pm_info->mmdc_io_num - 2][2] = 0x1000; + pm_info->mmdc_io_val[pm_info->mmdc_io_num - 1][2] = 0x1000; + } else { + if (pm_info->ddr_type == IMX_DDR_TYPE_LPDDR2) { + /* for LPDDR2, CKE0/1 and RESET pin need special setting */ + pm_info->mmdc_io_val[pm_info->mmdc_io_num - 3][2] = 0x1000; + pm_info->mmdc_io_val[pm_info->mmdc_io_num - 2][2] = 0x1000; + pm_info->mmdc_io_val[pm_info->mmdc_io_num - 1][2] = 0x80000; + } } /* initialize MMDC settings */ @@ -1096,6 +1157,18 @@ static int __init imx6q_suspend_init(const struct imx6_pm_socdata *socdata) mmdc_offset_array[i]); } + if (cpu_is_imx6sll() && pm_info->ddr_type == IMX_MMDC_DDR_TYPE_LPDDR3) { + pm_info->mmdc_val[0][1] = 0x8000; + pm_info->mmdc_val[2][1] = 0xa1390003; + pm_info->mmdc_val[3][1] = 0x400000; + pm_info->mmdc_val[4][1] = 0x800; + pm_info->mmdc_val[13][1] = 0x800; + pm_info->mmdc_val[14][1] = 0x20052; + pm_info->mmdc_val[20][1] = 0x201718; + pm_info->mmdc_val[21][1] = 0x8000; + pm_info->mmdc_val[28][1] = 0xa1310003; + } + /* need to overwrite the value for some mmdc registers */ if ((cpu_is_imx6sx() || cpu_is_imx6ul() || cpu_is_imx6ull()) && pm_info->ddr_type != IMX_DDR_TYPE_LPDDR2) { @@ -1232,6 +1305,23 @@ void __init imx6dl_pm_init(void) void __init imx6sl_pm_init(void) { + struct device_node *np; + struct regmap *gpr; + + if (cpu_is_imx6sll()) { + imx6_pm_common_init(&imx6sll_pm_data); + np = of_find_node_by_path( + "/soc/aips-bus@02000000/spba-bus@02000000/serial@02020000"); + if (np) + console_base = of_iomap(np, 0); + /* i.MX6SLL has bus auto clock gating function */ + gpr = syscon_regmap_lookup_by_compatible("fsl,imx6q-iomuxc-gpr"); + if (!IS_ERR(gpr)) + regmap_update_bits(gpr, IOMUXC_GPR5, + IOMUXC_GPR5_CLOCK_AFCG_X_BYPASS_MASK, 0); + return; + } + imx6_pm_common_init(&imx6sl_pm_data); } |