diff options
| -rw-r--r-- | arch/arm/cpu/armv7/mx7/soc.c | 64 | ||||
| -rw-r--r-- | configs/mx7dsabresd_defconfig | 2 |
2 files changed, 66 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/mx7/soc.c b/arch/arm/cpu/armv7/mx7/soc.c index d934b8b..ba6cfb9 100644 --- a/arch/arm/cpu/armv7/mx7/soc.c +++ b/arch/arm/cpu/armv7/mx7/soc.c @@ -12,6 +12,8 @@ #include <asm/imx-common/boot_mode.h> #include <asm/imx-common/dma.h> #include <asm/imx-common/hab.h> +#include <asm/imx-common/rdc-sema.h> +#include <asm/arch/imx-rdc.h> #include <asm/arch/crm_regs.h> #include <dm.h> #include <imx_thermal.h> @@ -29,6 +31,65 @@ U_BOOT_DEVICE(imx7_thermal) = { }; #endif +#ifdef CONFIG_IMX_RDC +/* + * In current design, if any peripheral was assigned to both A7 and M4, + * it will receive ipg_stop or ipg_wait when any of the 2 platforms enter + * low power mode. So M4 sleep will cause some peripherals fail to work + * at A7 core side. At default, all resources are in domain 0 - 3. + * + * There are 26 peripherals impacted by this IC issue: + * SIM2(sim2/emvsim2) + * SIM1(sim1/emvsim1) + * UART1/UART2/UART3/UART4/UART5/UART6/UART7 + * SAI1/SAI2/SAI3 + * WDOG1/WDOG2/WDOG3/WDOG4 + * GPT1/GPT2/GPT3/GPT4 + * PWM1/PWM2/PWM3/PWM4 + * ENET1/ENET2 + * Software Workaround: + * Here we setup some resources to domain 0 where M4 codes will move + * the M4 out of this domain. Then M4 is not able to access them any longer. + * This is a workaround for ic issue. So the peripherals are not shared + * by them. This way requires the uboot implemented the RDC driver and + * set the 26 IPs above to domain 0 only. M4 code will assign resource + * to its own domain, if it want to use the resource. + */ +static rdc_peri_cfg_t const resources[] = { + (RDC_PER_SIM1 | RDC_DOMAIN(0)), + (RDC_PER_SIM2 | RDC_DOMAIN(0)), + (RDC_PER_UART1 | RDC_DOMAIN(0)), + (RDC_PER_UART2 | RDC_DOMAIN(0)), + (RDC_PER_UART3 | RDC_DOMAIN(0)), + (RDC_PER_UART4 | RDC_DOMAIN(0)), + (RDC_PER_UART5 | RDC_DOMAIN(0)), + (RDC_PER_UART6 | RDC_DOMAIN(0)), + (RDC_PER_UART7 | RDC_DOMAIN(0)), + (RDC_PER_SAI1 | RDC_DOMAIN(0)), + (RDC_PER_SAI2 | RDC_DOMAIN(0)), + (RDC_PER_SAI3 | RDC_DOMAIN(0)), + (RDC_PER_WDOG1 | RDC_DOMAIN(0)), + (RDC_PER_WDOG2 | RDC_DOMAIN(0)), + (RDC_PER_WDOG3 | RDC_DOMAIN(0)), + (RDC_PER_WDOG4 | RDC_DOMAIN(0)), + (RDC_PER_GPT1 | RDC_DOMAIN(0)), + (RDC_PER_GPT2 | RDC_DOMAIN(0)), + (RDC_PER_GPT3 | RDC_DOMAIN(0)), + (RDC_PER_GPT4 | RDC_DOMAIN(0)), + (RDC_PER_PWM1 | RDC_DOMAIN(0)), + (RDC_PER_PWM2 | RDC_DOMAIN(0)), + (RDC_PER_PWM3 | RDC_DOMAIN(0)), + (RDC_PER_PWM4 | RDC_DOMAIN(0)), + (RDC_PER_ENET1 | RDC_DOMAIN(0)), + (RDC_PER_ENET2 | RDC_DOMAIN(0)), +}; + +static void isolate_resource(void) +{ + imx_rdc_setup_peripherals(resources, ARRAY_SIZE(resources)); +} +#endif + #if defined(CONFIG_SECURE_BOOT) struct imx_sec_config_fuse_t const imx_sec_config_fuse = { .bank = 1, @@ -163,6 +224,9 @@ int arch_cpu_init(void) mxs_dma_init(); #endif + if (IS_ENABLED(CONFIG_IMX_RDC)) + isolate_resource(); + return 0; } diff --git a/configs/mx7dsabresd_defconfig b/configs/mx7dsabresd_defconfig index 420d13e..1d262c1 100644 --- a/configs/mx7dsabresd_defconfig +++ b/configs/mx7dsabresd_defconfig @@ -1,6 +1,8 @@ CONFIG_ARM=y CONFIG_ARCH_MX7=y CONFIG_TARGET_MX7DSABRESD=y +CONFIG_IMX_RDC=y +CONFIG_IMX_BOOTAUX=y CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx7dsabresd/imximage.cfg,MX7D" # CONFIG_CMD_BOOTD is not set # CONFIG_CMD_IMI is not set |