diff options
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c | 3 | ||||
| -rw-r--r-- | arch/powerpc/cpu/mpc8xxx/ddr/ddr.h | 2 |
2 files changed, 4 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c index c3e1d7664d..936c1951f6 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ctrl_regs.c @@ -236,9 +236,12 @@ static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr, * tAXPD=1, need design to confirm. */ int tXP = max((get_memory_clk_period_ps() * 3), 7500); /* unit=ps */ + unsigned int data_rate = fsl_ddr_get_mem_data_rate(); tmrd_mclk = 4; /* set the turnaround time */ trwt_mclk = 1; + if ((data_rate/1000000 > 1150) || (popts->memctl_interleaving)) + twrt_mclk = 1; if (popts->dynamic_power == 0) { /* powerdown is not used */ act_pd_exit_mclk = 1; diff --git a/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h b/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h index 35b60a041b..c7c12c1c2f 100644 --- a/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h +++ b/arch/powerpc/cpu/mpc8xxx/ddr/ddr.h @@ -80,5 +80,5 @@ extern void check_interleaving_options(fsl_ddr_info_t *pinfo); extern unsigned int mclk_to_picos(unsigned int mclk); extern unsigned int get_memory_clk_period_ps(void); extern unsigned int picos_to_mclk(unsigned int picos); - +extern unsigned int fsl_ddr_get_mem_data_rate(void); #endif |
