diff options
| -rw-r--r-- | plat/imx/imx8mq/gpc.c | 10 | ||||
| -rw-r--r-- | plat/imx/imx8mq/imx8mq_bl31_setup.c | 3 | ||||
| -rw-r--r-- | plat/imx/imx8mq/platform.mk | 2 |
3 files changed, 15 insertions, 0 deletions
diff --git a/plat/imx/imx8mq/gpc.c b/plat/imx/imx8mq/gpc.c index 4daa89eb..a094bd65 100644 --- a/plat/imx/imx8mq/gpc.c +++ b/plat/imx/imx8mq/gpc.c @@ -5,6 +5,7 @@ */ #include <debug.h> +#include <delay_timer.h> #include <stdlib.h> #include <stdint.h> #include <stdbool.h> @@ -644,6 +645,15 @@ void imx_gpc_init(void) val = mmio_read_32(0x30390024); val &= ~0x1; mmio_write_32(0x30390024, val); + + /* for USB OTG, the limitation are: + * 1. before system clock config, the IPG clock run at 12.5MHz, delay time + * should be longer than 82us. + * 2. after system clock config, ipg clock run at 66.5MHz, delay time + * be longer that 15.3 us. + * Add 100us to make sure the USB OTG SRC is clear safely. + */ + udelay(100); } int imx_gpc_handler(uint32_t smc_fid, diff --git a/plat/imx/imx8mq/imx8mq_bl31_setup.c b/plat/imx/imx8mq/imx8mq_bl31_setup.c index 55289400..5fc21a56 100644 --- a/plat/imx/imx8mq/imx8mq_bl31_setup.c +++ b/plat/imx/imx8mq/imx8mq_bl31_setup.c @@ -12,6 +12,7 @@ #include <context.h> #include <context_mgmt.h> #include <debug.h> +#include <generic_delay_timer.h> #include <stdbool.h> #include <mmio.h> #include <platform.h> @@ -281,6 +282,8 @@ void bl31_plat_arch_setup(void) void bl31_platform_setup(void) { + generic_delay_timer_init(); + /* init the GICv3 cpu and distributor interface */ plat_gic_driver_init(); plat_gic_init(); diff --git a/plat/imx/imx8mq/platform.mk b/plat/imx/imx8mq/platform.mk index b20ccb6c..93d61c41 100644 --- a/plat/imx/imx8mq/platform.mk +++ b/plat/imx/imx8mq/platform.mk @@ -29,6 +29,8 @@ BL31_SOURCES += plat/imx/common/imx8_helpers.S \ lib/xlat_tables/xlat_tables_common.c \ lib/cpus/aarch64/cortex_a53.S \ drivers/console/aarch64/console.S \ + drivers/delay_timer/delay_timer.c \ + drivers/delay_timer/generic_delay_timer.c \ ${PLAT_GIC_SOURCES} \ ${PLAT_DDR_SOURCES} \ drivers/arm/tzc/tzc380.c |