diff options
| author | Bai Ping <ping.bai@nxp.com> | 2018-03-02 13:14:00 +0800 |
|---|---|---|
| committer | Abel Vesa <abel.vesa@nxp.com> | 2018-06-11 10:33:02 +0300 |
| commit | 02cba32824185a28605130e7a7ae6dd79f3e4fa6 (patch) | |
| tree | 96ae0d40ff5551404f7ce239c019ca366ff904b7 /plat | |
| parent | f2c72a59cf9797e065fdb4635f5cd5a9a861fc3c (diff) | |
plat: imx8mq: fix boot hang on ddr4/ddr3l board
Currently, DDR3L/DDR4 board don't support DDR DVFS,
So skip ddr switch 3200 mts if the DDR is not LPDDR4.
Signed-off-by: Bai Ping <ping.bai@nxp.com>
Diffstat (limited to 'plat')
| -rw-r--r-- | plat/imx/imx8mq/ddr/lpddr4_dvfs.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/plat/imx/imx8mq/ddr/lpddr4_dvfs.c b/plat/imx/imx8mq/ddr/lpddr4_dvfs.c index 8f37fc7d..bd96bbac 100644 --- a/plat/imx/imx8mq/ddr/lpddr4_dvfs.c +++ b/plat/imx/imx8mq/ddr/lpddr4_dvfs.c @@ -17,6 +17,9 @@ #include "lpddr4_dvfs.h" +#define DDRC_LPDDR4 (1 << 5) +#define DDR_TYPE_MASK 0x3f + /* lock used for DDR DVFS */ spinlock_t dfs_lock; /* IRQ used for DDR DVFS */ @@ -26,9 +29,15 @@ static volatile bool wait_ddrc_hwffc_done = true; static unsigned int init_fsp = 0x1; +static inline int get_ddr_type(void) +{ + return mmio_read_32(IMX_DDRC_BASE + DDRC_MSTR(0)) & DDR_TYPE_MASK; +} + void lpddr4_switch_to_3200(void) { - lpddr4_dvfs_swffc(init_fsp, 0x0); + if (get_ddr_type() == DDRC_LPDDR4) + lpddr4_dvfs_swffc(init_fsp, 0x0); } /* |