diff options
Diffstat (limited to 'arch/arm/mach-imx/suspend-imx7.S')
| -rw-r--r-- | arch/arm/mach-imx/suspend-imx7.S | 714 |
1 files changed, 714 insertions, 0 deletions
diff --git a/arch/arm/mach-imx/suspend-imx7.S b/arch/arm/mach-imx/suspend-imx7.S new file mode 100644 index 000000000000..5f4e31152a69 --- /dev/null +++ b/arch/arm/mach-imx/suspend-imx7.S @@ -0,0 +1,714 @@ +/* + * Copyright (C) 2015 Freescale Semiconductor, Inc. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include <linux/linkage.h> +#include <asm/asm-offsets.h> +#include "hardware.h" + +/* + * ==================== low level suspend ==================== + * + * Better to follow below rules to use ARM registers: + * r0: pm_info structure address; + * r1 ~ r4: for saving pm_info members; + * r5 ~ r10: free registers; + * r11: io base address. + * + * suspend ocram space layout: + * ======================== high address ====================== + * . + * . + * . + * ^ + * ^ + * ^ + * imx7_suspend code + * PM_INFO structure(imx7_cpu_pm_info) + * ======================== low address ======================= + */ + +/* + * Below offsets are based on struct imx7_cpu_pm_info + * which defined in arch/arm/mach-imx/pm-imx7.c, this + * structure contains necessary pm info for low level + * suspend related code. + */ +#define PM_INFO_M4_RESERVE0_OFFSET 0x0 +#define PM_INFO_M4_RESERVE1_OFFSET 0x4 +#define PM_INFO_M4_RESERVE2_OFFSET 0x8 +#define PM_INFO_PBASE_OFFSET 0xc +#define PM_INFO_RESUME_ADDR_OFFSET 0x10 +#define PM_INFO_DDR_TYPE_OFFSET 0x14 +#define PM_INFO_PM_INFO_SIZE_OFFSET 0x18 +#define PM_INFO_MX7_DDRC_P_OFFSET 0x1c +#define PM_INFO_MX7_DDRC_V_OFFSET 0x20 +#define PM_INFO_MX7_DDRC_PHY_P_OFFSET 0x24 +#define PM_INFO_MX7_DDRC_PHY_V_OFFSET 0x28 +#define PM_INFO_MX7_SRC_P_OFFSET 0x2c +#define PM_INFO_MX7_SRC_V_OFFSET 0x30 +#define PM_INFO_MX7_IOMUXC_GPR_P_OFFSET 0x34 +#define PM_INFO_MX7_IOMUXC_GPR_V_OFFSET 0x38 +#define PM_INFO_MX7_CCM_P_OFFSET 0x3c +#define PM_INFO_MX7_CCM_V_OFFSET 0x40 +#define PM_INFO_MX7_GPC_P_OFFSET 0x44 +#define PM_INFO_MX7_GPC_V_OFFSET 0x48 +#define PM_INFO_MX7_SNVS_P_OFFSET 0x4c +#define PM_INFO_MX7_SNVS_V_OFFSET 0x50 +#define PM_INFO_MX7_ANATOP_P_OFFSET 0x54 +#define PM_INFO_MX7_ANATOP_V_OFFSET 0x58 +#define PM_INFO_MX7_LPSR_P_OFFSET 0x5c +#define PM_INFO_MX7_LPSR_V_OFFSET 0x60 +#define PM_INFO_MX7_GIC_DIST_P_OFFSET 0x64 +#define PM_INFO_MX7_GIC_DIST_V_OFFSET 0x68 +#define PM_INFO_MX7_TTBR1_V_OFFSET 0x6c +#define PM_INFO_DDRC_REG_NUM_OFFSET 0x70 +#define PM_INFO_DDRC_REG_OFFSET 0x74 +#define PM_INFO_DDRC_VALUE_OFFSET 0x78 +#define PM_INFO_DDRC_PHY_REG_NUM_OFFSET 0x174 +#define PM_INFO_DDRC_PHY_REG_OFFSET 0x178 +#define PM_INFO_DDRC_PHY_VALUE_OFFSET 0x17c + +#define MX7_SRC_GPR1 0x74 +#define MX7_SRC_GPR2 0x78 +#define GPC_PGC_C0 0x800 +#define GPC_PGC_FM 0xa00 +#define ANADIG_SNVS_MISC_CTRL 0x380 +#define ANADIG_SNVS_MISC_CTRL_SET 0x384 +#define ANADIG_SNVS_MISC_CTRL_CLR 0x388 +#define ANADIG_DIGPROG 0x800 +#define DDRC_STAT 0x4 +#define DDRC_PWRCTL 0x30 +#define DDRC_PSTAT 0x3fc +#define DDRC_PCTRL_0 0x490 +#define DDRC_DFIMISC 0x1b0 +#define DDRC_SWCTL 0x320 +#define DDRC_SWSTAT 0x324 +#define DDRPHY_LP_CON0 0x18 + +#define CCM_SNVS_LPCG 0x250 +#define MX7D_GPC_IMR1 0x30 +#define MX7D_GPC_IMR2 0x34 +#define MX7D_GPC_IMR3 0x38 +#define MX7D_GPC_IMR4 0x3c + + .align 3 + + .macro disable_l1_dcache + + /* + * Flush all data from the L1 data cache before disabling + * SCTLR.C bit. + */ + push {r0 - r10, lr} + ldr r7, =v7_flush_dcache_all + mov lr, pc + mov pc, r7 + pop {r0 - r10, lr} + + /* disable d-cache */ + mrc p15, 0, r7, c1, c0, 0 + bic r7, r7, #(1 << 2) + mcr p15, 0, r7, c1, c0, 0 + dsb + isb + + push {r0 - r10, lr} + ldr r7, =v7_flush_dcache_all + mov lr, pc + mov pc, r7 + pop {r0 - r10, lr} + + .endm + + .macro store_ttbr1 + + /* Store TTBR1 to pm_info->ttbr1 */ + mrc p15, 0, r7, c2, c0, 1 + str r7, [r0, #PM_INFO_MX7_TTBR1_V_OFFSET] + + /* Disable Branch Prediction, Z bit in SCTLR. */ + mrc p15, 0, r6, c1, c0, 0 + bic r6, r6, #0x800 + mcr p15, 0, r6, c1, c0, 0 + + /* Flush the BTAC. */ + ldr r6, =0x0 + mcr p15, 0, r6, c7, c1, 6 + + ldr r6, =iram_tlb_phys_addr + ldr r6, [r6] + dsb + isb + + /* Store the IRAM table in TTBR1 */ + mcr p15, 0, r6, c2, c0, 1 + /* Read TTBCR and set PD0=1, N = 1 */ + mrc p15, 0, r6, c2, c0, 2 + orr r6, r6, #0x11 + mcr p15, 0, r6, c2, c0, 2 + + dsb + isb + + /* flush the TLB */ + ldr r6, =0x0 + mcr p15, 0, r6, c8, c3, 0 + + .endm + + .macro restore_ttbr1 + + /* Enable L1 data cache. */ + mrc p15, 0, r6, c1, c0, 0 + orr r6, r6, #0x4 + mcr p15, 0, r6, c1, c0, 0 + + dsb + isb + + /* Restore TTBCR */ + /* Read TTBCR and set PD0=0, N = 0 */ + mrc p15, 0, r6, c2, c0, 2 + bic r6, r6, #0x11 + mcr p15, 0, r6, c2, c0, 2 + dsb + isb + + /* flush the TLB */ + ldr r6, =0x0 + mcr p15, 0, r6, c8, c3, 0 + + /* Enable Branch Prediction, Z bit in SCTLR. */ + mrc p15, 0, r6, c1, c0, 0 + orr r6, r6, #0x800 + mcr p15, 0, r6, c1, c0, 0 + + /* Flush the Branch Target Address Cache (BTAC) */ + ldr r6, =0x0 + mcr p15, 0, r6, c7, c1, 6 + + /* Restore TTBR1, get the origin ttbr1 from pm info */ + ldr r7, [r0, #PM_INFO_MX7_TTBR1_V_OFFSET] + mcr p15, 0, r7, c2, c0, 1 + + .endm + + .macro ddrc_enter_self_refresh + + ldr r11, [r0, #PM_INFO_MX7_DDRC_V_OFFSET] + + /* let DDR out of self-refresh */ + ldr r7, =0x0 + str r7, [r11, #DDRC_PWRCTL] + + /* wait rw port_busy clear */ + ldr r6, =(0x1 << 16) + orr r6, r6, #0x1 +1: + ldr r7, [r11, #DDRC_PSTAT] + ands r7, r7, r6 + bne 1b + + /* enter self-refresh bit 5 */ + ldr r7, =(0x1 << 5) + str r7, [r11, #DDRC_PWRCTL] + + /* wait until self-refresh mode entered */ +2: + ldr r7, [r11, #DDRC_STAT] + and r7, r7, #0x3 + cmp r7, #0x3 + bne 2b +3: + ldr r7, [r11, #DDRC_STAT] + ands r7, r7, #0x20 + beq 3b + + /* disable dram clk */ + ldr r7, [r11, #DDRC_PWRCTL] + orr r7, r7, #(1 << 3) + str r7, [r11, #DDRC_PWRCTL] + + .endm + + .macro ddrc_exit_self_refresh + + cmp r5, #0x0 + ldreq r11, [r0, #PM_INFO_MX7_DDRC_V_OFFSET] + ldrne r11, [r0, #PM_INFO_MX7_DDRC_P_OFFSET] + + /* let DDR out of self-refresh */ + ldr r7, =0x0 + str r7, [r11, #DDRC_PWRCTL] + + /* wait until self-refresh mode entered */ +4: + ldr r7, [r11, #DDRC_STAT] + and r7, r7, #0x3 + cmp r7, #0x3 + beq 4b + + /* enable auto self-refresh */ + ldr r7, [r11, #DDRC_PWRCTL] + orr r7, r7, #(1 << 0) + str r7, [r11, #DDRC_PWRCTL] + + .endm + + .macro wait_delay +5: + subs r6, r6, #0x1 + bne 5b + + .endm + + .macro ddr_enter_retention + + ldr r11, [r0, #PM_INFO_MX7_DDRC_V_OFFSET] + + /* let DDR out of self-refresh */ + ldr r7, =0x0 + str r7, [r11, #DDRC_PCTRL_0] + + /* wait rw port_busy clear */ + ldr r6, =(0x1 << 16) + orr r6, r6, #0x1 +6: + ldr r7, [r11, #DDRC_PSTAT] + ands r7, r7, r6 + bne 6b + + ldr r11, [r0, #PM_INFO_MX7_DDRC_V_OFFSET] + /* enter self-refresh bit 5 */ + ldr r7, =(0x1 << 5) + str r7, [r11, #DDRC_PWRCTL] + + /* wait until self-refresh mode entered */ +7: + ldr r7, [r11, #DDRC_STAT] + and r7, r7, #0x3 + cmp r7, #0x3 + bne 7b +8: + ldr r7, [r11, #DDRC_STAT] + ands r7, r7, #0x20 + beq 8b + + /* disable dram clk */ + ldr r7, =(0x1 << 5) + orr r7, r7, #(1 << 3) + str r7, [r11, #DDRC_PWRCTL] + + ldr r11, [r0, #PM_INFO_MX7_ANATOP_V_OFFSET] + ldr r7, [r11, #ANADIG_DIGPROG] + and r7, r7, #0xff + cmp r7, #0x11 + bne 10f + + /* TO 1.1 */ + ldr r11, [r0, #PM_INFO_MX7_IOMUXC_GPR_V_OFFSET] + ldr r7, =0x38000000 + str r7, [r11] + + /* LPSR mode need to use TO1.0 flow as IOMUX lost power */ + ldr r10, [r0, #PM_INFO_MX7_LPSR_V_OFFSET] + ldr r7, [r10] + cmp r7, #0x0 + beq 11f +10: + /* reset ddr_phy */ + ldr r11, [r0, #PM_INFO_MX7_ANATOP_V_OFFSET] + ldr r7, =0x0 + str r7, [r11, #ANADIG_SNVS_MISC_CTRL] + + /* delay 7 us */ + ldr r6, =6000 + wait_delay + + ldr r11, [r0, #PM_INFO_MX7_SRC_V_OFFSET] + ldr r6, =0x1000 + ldr r7, [r11, r6] + orr r7, r7, #0x1 + str r7, [r11, r6] +11: + /* turn off ddr power */ + ldr r11, [r0, #PM_INFO_MX7_ANATOP_V_OFFSET] + ldr r7, =(0x1 << 29) + str r7, [r11, #ANADIG_SNVS_MISC_CTRL_SET] + + ldr r11, [r0, #PM_INFO_MX7_SRC_V_OFFSET] + ldr r6, =0x1000 + ldr r7, [r11, r6] + orr r7, r7, #0x1 + str r7, [r11, r6] + + .endm + + .macro ddr_exit_retention + + cmp r5, #0x0 + ldreq r1, [r0, #PM_INFO_MX7_ANATOP_V_OFFSET] + ldrne r1, [r0, #PM_INFO_MX7_ANATOP_P_OFFSET] + ldreq r2, [r0, #PM_INFO_MX7_SRC_V_OFFSET] + ldrne r2, [r0, #PM_INFO_MX7_SRC_P_OFFSET] + ldreq r3, [r0, #PM_INFO_MX7_DDRC_V_OFFSET] + ldrne r3, [r0, #PM_INFO_MX7_DDRC_P_OFFSET] + ldreq r4, [r0, #PM_INFO_MX7_DDRC_PHY_V_OFFSET] + ldrne r4, [r0, #PM_INFO_MX7_DDRC_PHY_P_OFFSET] + ldreq r10, [r0, #PM_INFO_MX7_CCM_V_OFFSET] + ldrne r10, [r0, #PM_INFO_MX7_CCM_P_OFFSET] + ldreq r11, [r0, #PM_INFO_MX7_IOMUXC_GPR_V_OFFSET] + ldrne r11, [r0, #PM_INFO_MX7_IOMUXC_GPR_P_OFFSET] + + /* turn on ddr power */ + ldr r7, =(0x1 << 29) + str r7, [r1, #ANADIG_SNVS_MISC_CTRL_CLR] + + ldr r6, =50 + wait_delay + + /* clear ddr_phy reset */ + ldr r6, =0x1000 + ldr r7, [r2, r6] + orr r7, r7, #0x3 + str r7, [r2, r6] + ldr r7, [r2, r6] + bic r7, r7, #0x1 + str r7, [r2, r6] +13: + ldr r6, [r0, #PM_INFO_DDRC_REG_NUM_OFFSET] + ldr r7, =PM_INFO_DDRC_REG_OFFSET + add r7, r7, r0 +14: + ldr r8, [r7], #0x4 + ldr r9, [r7], #0x4 + str r9, [r3, r8] + subs r6, r6, #0x1 + bne 14b + ldr r7, =0x20 + str r7, [r3, #DDRC_PWRCTL] + ldr r7, =0x0 + str r7, [r3, #DDRC_DFIMISC] + + /* do PHY, clear ddr_phy reset */ + ldr r6, =0x1000 + ldr r7, [r2, r6] + bic r7, r7, #0x2 + str r7, [r2, r6] + + ldr r7, [r1, #ANADIG_DIGPROG] + and r7, r7, #0xff + cmp r7, #0x11 + bne 12f + + /* + * TKT262940: + * System hang when press RST for DDR PAD is + * in retention mode, fixed on TO1.1 + */ + ldr r7, [r11] + bic r7, r7, #(1 << 27) + str r7, [r11] + ldr r7, [r11] + bic r7, r7, #(1 << 29) + str r7, [r11] +12: + ldr r7, =(0x1 << 30) + str r7, [r1, #ANADIG_SNVS_MISC_CTRL_SET] + + /* need to delay ~5mS */ + ldr r6, =0x100000 + wait_delay + + ldr r6, [r0, #PM_INFO_DDRC_PHY_REG_NUM_OFFSET] + ldr r7, =PM_INFO_DDRC_PHY_REG_OFFSET + add r7, r7, r0 + +15: + ldr r8, [r7], #0x4 + ldr r9, [r7], #0x4 + str r9, [r4, r8] + subs r6, r6, #0x1 + bne 15b + + ldr r7, =0x0 + add r9, r10, #0x4000 + str r7, [r9, #0x130] + + ldr r7, =0x170 + orr r7, r7, #0x8 + str r7, [r11, #0x20] + + ldr r7, =0x2 + add r9, r10, #0x4000 + str r7, [r9, #0x130] + + ldr r7, =0xf + str r7, [r4, #DDRPHY_LP_CON0] + + /* wait until self-refresh mode entered */ +16: + ldr r7, [r3, #DDRC_STAT] + and r7, r7, #0x3 + cmp r7, #0x3 + bne 16b + ldr r7, =0x0 + str r7, [r3, #DDRC_SWCTL] + ldr r7, =0x1 + str r7, [r3, #DDRC_DFIMISC] + ldr r7, =0x1 + str r7, [r3, #DDRC_SWCTL] +17: + ldr r7, [r3, #DDRC_SWSTAT] + and r7, r7, #0x1 + cmp r7, #0x1 + bne 17b +18: + ldr r7, [r3, #DDRC_STAT] + and r7, r7, #0x20 + cmp r7, #0x20 + bne 18b + + /* let DDR out of self-refresh */ + ldr r7, =0x0 + str r7, [r3, #DDRC_PWRCTL] +19: + ldr r7, [r3, #DDRC_STAT] + and r7, r7, #0x30 + cmp r7, #0x0 + bne 19b + +20: + ldr r7, [r3, #DDRC_STAT] + and r7, r7, #0x3 + cmp r7, #0x1 + bne 20b + + /* enable port */ + ldr r7, =0x1 + str r7, [r3, #DDRC_PCTRL_0] + + /* enable auto self-refresh */ + ldr r7, [r3, #DDRC_PWRCTL] + orr r7, r7, #(1 << 0) + str r7, [r3, #DDRC_PWRCTL] + + .endm + +ENTRY(imx7_suspend) + push {r4-r12} + + /* make sure SNVS clk is enabled */ + ldr r11, [r0, #PM_INFO_MX7_CCM_V_OFFSET] + add r11, r11, #0x4000 + ldr r7, =0x3 + str r7, [r11, #CCM_SNVS_LPCG] + + /* check whether it is a standby mode */ + ldr r11, [r0, #PM_INFO_MX7_GPC_V_OFFSET] + ldr r7, [r11, #GPC_PGC_C0] + cmp r7, #0 + beq ddr_only_self_refresh + + /* + * The value of r0 is mapped the same in origin table and IRAM table, + * thus no need to care r0 here. + */ + ldr r1, [r0, #PM_INFO_PBASE_OFFSET] + ldr r2, [r0, #PM_INFO_RESUME_ADDR_OFFSET] + ldr r3, [r0, #PM_INFO_DDR_TYPE_OFFSET] + ldr r4, [r0, #PM_INFO_PM_INFO_SIZE_OFFSET] + + /* + * counting the resume address in iram + * to set it in SRC register. + */ + ldr r6, =imx7_suspend + ldr r7, =resume + sub r7, r7, r6 + add r8, r1, r4 + add r9, r8, r7 + + ldr r11, [r0, #PM_INFO_MX7_SRC_V_OFFSET] + /* store physical resume addr and pm_info address. */ + str r9, [r11, #MX7_SRC_GPR1] + str r1, [r11, #MX7_SRC_GPR2] + + disable_l1_dcache + + store_ttbr1 + + ldr r11, [r0, #PM_INFO_MX7_GPC_V_OFFSET] + ldr r7, [r11, #GPC_PGC_FM] + cmp r7, #0 + beq ddr_only_self_refresh + + ddr_enter_retention + /* enter LPSR mode if resume addr is valid */ + ldr r11, [r0, #PM_INFO_MX7_LPSR_V_OFFSET] + ldr r7, [r11] + cmp r7, #0x0 + beq ddr_retention_enter_out + + /* disable STOP mode before entering LPSR */ + ldr r11, [r0, #PM_INFO_MX7_GPC_V_OFFSET] + ldr r7, [r11] + bic r7, #0xf + str r7, [r11] + + /* shut down vddsoc to enter lpsr mode */ + ldr r11, [r0, #PM_INFO_MX7_SNVS_V_OFFSET] + ldr r7, [r11, #0x38] + orr r7, r7, #0x60 + str r7, [r11, #0x38] +wait_shutdown: + wfi + nop + nop + nop + nop + b wait_shutdown + +ddr_only_self_refresh: + ddrc_enter_self_refresh + b wfi +ddr_retention_enter_out: + + ldr r11, [r0, #PM_INFO_MX7_GIC_DIST_V_OFFSET] + ldr r7, =0x0 + ldr r8, =0x1000 + str r7, [r11, r8] + + ldr r11, [r0, #PM_INFO_MX7_GPC_V_OFFSET] + ldr r4, [r11, #MX7D_GPC_IMR1] + ldr r5, [r11, #MX7D_GPC_IMR2] + ldr r6, [r11, #MX7D_GPC_IMR3] + ldr r7, [r11, #MX7D_GPC_IMR4] + + ldr r8, =0xffffffff + str r8, [r11, #MX7D_GPC_IMR1] + str r8, [r11, #MX7D_GPC_IMR2] + str r8, [r11, #MX7D_GPC_IMR3] + str r8, [r11, #MX7D_GPC_IMR4] + + /* + * enable the RBC bypass counter here + * to hold off the interrupts. RBC counter + * = 8 (240us). With this setting, the latency + * from wakeup interrupt to ARM power up + * is ~250uS. + */ + ldr r8, [r11, #0x14] + bic r8, r8, #(0x3f << 24) + orr r8, r8, #(0x8 << 24) + str r8, [r11, #0x14] + + /* enable the counter. */ + ldr r8, [r11, #0x14] + orr r8, r8, #(0x1 << 30) + str r8, [r11, #0x14] + + /* unmask all the GPC interrupts. */ + str r4, [r11, #MX7D_GPC_IMR1] + str r5, [r11, #MX7D_GPC_IMR2] + str r6, [r11, #MX7D_GPC_IMR3] + str r7, [r11, #MX7D_GPC_IMR4] + + /* + * now delay for a short while (3usec) + * ARM is at 1GHz at this point + * so a short loop should be enough. + * this delay is required to ensure that + * the RBC counter can start counting in + * case an interrupt is already pending + * or in case an interrupt arrives just + * as ARM is about to assert DSM_request. + */ + ldr r7, =2000 +rbc_loop: + subs r7, r7, #0x1 + bne rbc_loop +wfi: + /* Zzz, enter stop mode */ + wfi + nop + nop + nop + nop + + mov r5, #0x0 + + ldr r11, [r0, #PM_INFO_MX7_GPC_V_OFFSET] + ldr r7, [r11, #GPC_PGC_FM] + cmp r7, #0 + beq wfi_ddr_self_refresh_out + + ddr_exit_retention + b wfi_ddr_retention_out +wfi_ddr_self_refresh_out: + ddrc_exit_self_refresh +wfi_ddr_retention_out: + + /* check whether it is a standby mode */ + ldr r11, [r0, #PM_INFO_MX7_GPC_V_OFFSET] + ldr r7, [r11, #GPC_PGC_C0] + cmp r7, #0 + beq standby_out + + ldr r11, [r0, #PM_INFO_MX7_GIC_DIST_V_OFFSET] + ldr r7, =0x1 + ldr r8, =0x1000 + str r7, [r11, r8] + + restore_ttbr1 +standby_out: + pop {r4-r12} + /* return to suspend finish */ + mov pc, lr + +resume: + /* invalidate L1 I-cache first */ + mov r6, #0x0 + mcr p15, 0, r6, c7, c5, 0 + mcr p15, 0, r6, c7, c5, 6 + /* enable the Icache and branch prediction */ + mov r6, #0x1800 + mcr p15, 0, r6, c1, c0, 0 + isb + + /* get physical resume address from pm_info. */ + ldr lr, [r0, #PM_INFO_RESUME_ADDR_OFFSET] + /* clear core0's entry and parameter */ + ldr r11, [r0, #PM_INFO_MX7_SRC_P_OFFSET] + mov r7, #0x0 + str r7, [r11, #MX7_SRC_GPR1] + str r7, [r11, #MX7_SRC_GPR2] + + mov r5, #0x1 + + ldr r11, [r0, #PM_INFO_MX7_GPC_P_OFFSET] + ldr r7, [r11, #GPC_PGC_FM] + cmp r7, #0 + beq dsm_ddr_self_refresh_out + + ddr_exit_retention + b dsm_ddr_retention_out +dsm_ddr_self_refresh_out: + ddrc_exit_self_refresh +dsm_ddr_retention_out: + + mov pc, lr +ENDPROC(imx7_suspend) + +ENTRY(ca7_cpu_resume) + bl v7_invalidate_l1 + b cpu_resume +ENDPROC(ca7_cpu_resume) |