diff options
Diffstat (limited to 'src/soc/rockchip/rk3399')
| -rw-r--r-- | src/soc/rockchip/rk3399/sdram.c | 38 |
1 files changed, 27 insertions, 11 deletions
diff --git a/src/soc/rockchip/rk3399/sdram.c b/src/soc/rockchip/rk3399/sdram.c index ed13a82d38..ee980339a1 100644 --- a/src/soc/rockchip/rk3399/sdram.c +++ b/src/soc/rockchip/rk3399/sdram.c @@ -16,12 +16,14 @@ #include <arch/io.h> #include <console/console.h> #include <delay.h> +#include <reset.h> #include <soc/addressmap.h> #include <soc/clock.h> #include <soc/sdram.h> #include <soc/grf.h> #include <soc/soc.h> #include <string.h> +#include <timer.h> #include <types.h> #define DDR_PI_OFFSET 0x800 @@ -466,8 +468,8 @@ static void phy_io_config(u32 channel, clrsetbits_le32(&denali_phy[939], 0x3 << 17, speed << 17); } -static void pctl_cfg(u32 channel, - const struct rk3399_sdram_params *sdram_params) +static int pctl_cfg(u32 channel, + const struct rk3399_sdram_params *sdram_params) { u32 *denali_ctl = rk3399_ddr_pctl[channel]->denali_ctl; u32 *denali_pi = rk3399_ddr_pi[channel]->denali_pi; @@ -476,6 +478,7 @@ static void pctl_cfg(u32 channel, const u32 *params_phy = sdram_params->phy_regs.denali_phy; u32 tmp, tmp1, tmp2; u32 pwrup_srefresh_exit; + struct stopwatch sw; /* * work around controller bug: @@ -554,14 +557,16 @@ static void pctl_cfg(u32 channel, /* PHY_DLL_RST_EN */ clrsetbits_le32(&denali_phy[957], 0x3 << 24, 0x2 << 24); - /* - * FIXME: - * need to care ERROR bit - */ - while (!(read32(&denali_ctl[203]) & (1 << 3))) - ; + /* FIXME: need to care ERROR bit */ + stopwatch_init_msecs_expire(&sw, 100); + while (!(read32(&denali_ctl[203]) & (1 << 3))) { + if (stopwatch_expired(&sw)) + return -1; + } + clrsetbits_le32(&denali_ctl[68], PWRUP_SREFRESH_EXIT, pwrup_srefresh_exit); + return 0; } static void select_per_cs_training_index(u32 channel, u32 rank) @@ -987,14 +992,25 @@ void sdram_init(const struct rk3399_sdram_params *sdram_params) if (channel >= sdram_params->num_channels) continue; - pctl_cfg(channel, sdram_params); + /* + * TODO: we need to find the root cause why this + * step may fail, before that, we just reset the + * system, and start again. + */ + if (pctl_cfg(channel, sdram_params) != 0) { + printk(BIOS_ERR, "pctl_cfg fail, reset\n"); + hard_reset(); + } /* LPDDR2/LPDDR3 need to wait DAI complete, max 10us */ if (dramtype == LPDDR3) udelay(10); - if (data_training(channel, sdram_params, PI_FULL_TARINING)) - die("SDRAM initialization failed!"); + if (data_training(channel, sdram_params, PI_FULL_TARINING)) { + printk(BIOS_ERR, + "SDRAM initialization failed, reset\n"); + hard_reset(); + } set_ddrconfig(sdram_params, channel, sdram_params->ch[channel].ddrconfig); |