diff options
Diffstat (limited to 'drivers/ddr')
| -rw-r--r-- | drivers/ddr/altera/sequencer.c | 23 |
1 files changed, 14 insertions, 9 deletions
diff --git a/drivers/ddr/altera/sequencer.c b/drivers/ddr/altera/sequencer.c index 0b76ba29db..cc2fa47b2d 100644 --- a/drivers/ddr/altera/sequencer.c +++ b/drivers/ddr/altera/sequencer.c @@ -430,11 +430,19 @@ static void scc_mgr_set_dqs_en_delay_all_ranks(uint32_t read_group, writel(0, &sdr_scc_mgr->update); } -static void scc_mgr_set_oct_out1_delay(uint32_t write_group, uint32_t delay) +/** + * scc_mgr_set_oct_out1_delay() - Set OCT output delay + * @write_group: Write group + * @delay: Delay value + * + * This function sets the OCT output delay in SCC manager. + */ +static void scc_mgr_set_oct_out1_delay(const u32 write_group, const u32 delay) { - uint32_t read_group; - uint32_t addr = SDR_PHYGRP_SCCGRP_ADDRESS | SCC_MGR_OCT_OUT1_DELAY_OFFSET; - + const int ratio = RW_MGR_MEM_IF_READ_DQS_WIDTH / + RW_MGR_MEM_IF_WRITE_DQS_WIDTH; + const int base = write_group * ratio; + int i; /* * Load the setting in the SCC manager * Although OCT affects only write data, the OCT delay is controlled @@ -442,11 +450,8 @@ static void scc_mgr_set_oct_out1_delay(uint32_t write_group, uint32_t delay) * For protocols where a write group consists of multiple read groups, * the setting must be set multiple times. */ - for (read_group = write_group * RW_MGR_MEM_IF_READ_DQS_WIDTH / - RW_MGR_MEM_IF_WRITE_DQS_WIDTH; - read_group < (write_group + 1) * RW_MGR_MEM_IF_READ_DQS_WIDTH / - RW_MGR_MEM_IF_WRITE_DQS_WIDTH; ++read_group) - writel(delay, addr + (read_group << 2)); + for (i = 0; i < ratio; i++) + scc_mgr_set(SCC_MGR_OCT_OUT1_DELAY_OFFSET, base + i, delay); } static void scc_mgr_set_hhp_extras(void) |