Commit 23f9670f authored by York Sun's avatar York Sun Committed by Kumar Gala

powerpc/mpc8xxx: Allow override DDR read-to-write turnaround time

Add this option to allow boards to override the default read-to-write
turnaround time for better performance.
Signed-off-by: default avatarYork Sun <yorksun@freescale.com>
parent 86dda504
......@@ -267,6 +267,9 @@ static void set_timing_cfg_0(fsl_ddr_cfg_regs_t *ddr,
tmrd_mclk = 2;
#endif
if (popts->trwt_override)
trwt_mclk = popts->trwt;
ddr->timing_cfg_0 = (0
| ((trwt_mclk & 0x3) << 30) /* RWT */
| ((twrt_mclk & 0x3) << 28) /* WRT */
......
......@@ -271,6 +271,9 @@ typedef struct memctl_options_s {
unsigned int rcw_2;
/* control register 1 */
unsigned int ddr_cdr1;
unsigned int trwt_override;
unsigned int trwt; /* read-to-write turnaround */
} memctl_options_t;
extern phys_size_t fsl_ddr_sdram(void);
......
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