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ddr: altera: Minor clean up of mem_skip_calibrate()

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Perform minor coding style cleanup of the mem_skip_calibrate() function,
clean up comments and add kerneldoc. No functional change.

Signed-off-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Marek Vasut 2015-07-26 10:54:15 +02:00
parent 080bf64ef1
commit 51cea0b6c0
1 changed files with 11 additions and 8 deletions
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19
drivers/ddr/altera/sequencer.c
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@ -3169,7 +3169,11 @@ static void mem_init_latency(void)
writel(wlat, &phy_mgr_cfg->afi_wlat);
}
/* Set VFIFO and LFIFO to instant-on settings in skip calibration mode */
/**
* @mem_skip_calibrate() - Set VFIFO and LFIFO to instant-on settings
*
* Set VFIFO and LFIFO to instant-on settings in skip calibration mode.
*/
static void mem_skip_calibrate(void)
{
uint32_t vfifo_offset;
@ -3178,7 +3182,7 @@ static void mem_skip_calibrate(void)
debug("%s:%d\n", __func__, __LINE__);
/* Need to update every shadow register set used by the interface */
for (r = 0; r < RW_MGR_MEM_NUMBER_OF_RANKS;
r += NUM_RANKS_PER_SHADOW_REG) {
r += NUM_RANKS_PER_SHADOW_REG) {
/*
* Set output phase alignment settings appropriate for
* skip calibration.
@ -3215,8 +3219,8 @@ static void mem_skip_calibrate(void)
*
* (1.25 * IO_DLL_CHAIN_LENGTH - 2)
*/
scc_mgr_set_dqdqs_output_phase(i, (1.25 *
IO_DLL_CHAIN_LENGTH - 2));
scc_mgr_set_dqdqs_output_phase(i,
1.25 * IO_DLL_CHAIN_LENGTH - 2);
}
writel(0xff, &sdr_scc_mgr->dqs_ena);
writel(0xff, &sdr_scc_mgr->dqs_io_ena);
@ -3242,14 +3246,13 @@ static void mem_skip_calibrate(void)
* in sequencer.
*/
vfifo_offset = CALIB_VFIFO_OFFSET;
for (j = 0; j < vfifo_offset; j++) {
for (j = 0; j < vfifo_offset; j++)
writel(0xff, &phy_mgr_cmd->inc_vfifo_hard_phy);
}
writel(0, &phy_mgr_cmd->fifo_reset);
/*
* For ACV with hard lfifo, we get the skip-cal setting from
* generation-time constant.
* For Arria V and Cyclone V with hard LFIFO, we get the skip-cal
* setting from generation-time constant.
*/
gbl->curr_read_lat = CALIB_LFIFO_OFFSET;
writel(gbl->curr_read_lat, &phy_mgr_cfg->phy_rlat);