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phy: cadence-torrent: Add wrapper for PHY register access 

Add a wrapper function to write Torrent PHY registers to improve
code readability.

Signed-off-by: Swapnil Jakhade <sjakhade@cadence.com>
Signed-off-by: Yuti Amonkar <yamonkar@cadence.com>
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
This commit is contained in:
Swapnil Jakhade 2020-02-06 07:10:53 +01:00 committed by Kishon Vijay Abraham I
parent 92e9ccc6dc
commit ccb1b89de3
1 changed files with 76 additions and 64 deletions
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140
drivers/phy/cadence/phy-cadence-torrent.c
View File

@ -132,6 +132,14 @@ static const struct phy_ops cdns_torrent_phy_ops = {
.owner = THIS_MODULE,
};
/* PHY mmr access functions */
static void cdns_torrent_phy_write(struct cdns_torrent_phy *cdns_phy,
u32 offset, u32 val)
{
writel(val, cdns_phy->sd_base + offset);
}
static int cdns_torrent_dp_init(struct phy *phy)
{
unsigned char lane_bits;
@ -234,34 +242,35 @@ static
void cdns_torrent_dp_pma_cmn_cfg_25mhz(struct cdns_torrent_phy *cdns_phy)
{
/* refclock registers - assumes 25 MHz refclock */
writel(0x0019, cdns_phy->sd_base + CMN_SSM_BIAS_TMR);
writel(0x0032, cdns_phy->sd_base + CMN_PLLSM0_PLLPRE_TMR);
writel(0x00D1, cdns_phy->sd_base + CMN_PLLSM0_PLLLOCK_TMR);
writel(0x0032, cdns_phy->sd_base + CMN_PLLSM1_PLLPRE_TMR);
writel(0x00D1, cdns_phy->sd_base + CMN_PLLSM1_PLLLOCK_TMR);
writel(0x007D, cdns_phy->sd_base + CMN_BGCAL_INIT_TMR);
writel(0x007D, cdns_phy->sd_base + CMN_BGCAL_ITER_TMR);
writel(0x0019, cdns_phy->sd_base + CMN_IBCAL_INIT_TMR);
writel(0x001E, cdns_phy->sd_base + CMN_TXPUCAL_INIT_TMR);
writel(0x0006, cdns_phy->sd_base + CMN_TXPUCAL_ITER_TMR);
writel(0x001E, cdns_phy->sd_base + CMN_TXPDCAL_INIT_TMR);
writel(0x0006, cdns_phy->sd_base + CMN_TXPDCAL_ITER_TMR);
writel(0x02EE, cdns_phy->sd_base + CMN_RXCAL_INIT_TMR);
writel(0x0006, cdns_phy->sd_base + CMN_RXCAL_ITER_TMR);
writel(0x0002, cdns_phy->sd_base + CMN_SD_CAL_INIT_TMR);
writel(0x0002, cdns_phy->sd_base + CMN_SD_CAL_ITER_TMR);
writel(0x000E, cdns_phy->sd_base + CMN_SD_CAL_REFTIM_START);
writel(0x012B, cdns_phy->sd_base + CMN_SD_CAL_PLLCNT_START);
cdns_torrent_phy_write(cdns_phy, CMN_SSM_BIAS_TMR, 0x0019);
cdns_torrent_phy_write(cdns_phy, CMN_PLLSM0_PLLPRE_TMR, 0x0032);
cdns_torrent_phy_write(cdns_phy, CMN_PLLSM0_PLLLOCK_TMR, 0x00D1);
cdns_torrent_phy_write(cdns_phy, CMN_PLLSM1_PLLPRE_TMR, 0x0032);
cdns_torrent_phy_write(cdns_phy, CMN_PLLSM1_PLLLOCK_TMR, 0x00D1);
cdns_torrent_phy_write(cdns_phy, CMN_BGCAL_INIT_TMR, 0x007D);
cdns_torrent_phy_write(cdns_phy, CMN_BGCAL_ITER_TMR, 0x007D);
cdns_torrent_phy_write(cdns_phy, CMN_IBCAL_INIT_TMR, 0x0019);
cdns_torrent_phy_write(cdns_phy, CMN_TXPUCAL_INIT_TMR, 0x001E);
cdns_torrent_phy_write(cdns_phy, CMN_TXPUCAL_ITER_TMR, 0x0006);
cdns_torrent_phy_write(cdns_phy, CMN_TXPDCAL_INIT_TMR, 0x001E);
cdns_torrent_phy_write(cdns_phy, CMN_TXPDCAL_ITER_TMR, 0x0006);
cdns_torrent_phy_write(cdns_phy, CMN_RXCAL_INIT_TMR, 0x02EE);
cdns_torrent_phy_write(cdns_phy, CMN_RXCAL_ITER_TMR, 0x0006);
cdns_torrent_phy_write(cdns_phy, CMN_SD_CAL_INIT_TMR, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_SD_CAL_ITER_TMR, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_SD_CAL_REFTIM_START, 0x000E);
cdns_torrent_phy_write(cdns_phy, CMN_SD_CAL_PLLCNT_START, 0x012B);
/* PLL registers */
writel(0x0409, cdns_phy->sd_base + CMN_PDIAG_PLL0_CP_PADJ_M0);
writel(0x1001, cdns_phy->sd_base + CMN_PDIAG_PLL0_CP_IADJ_M0);
writel(0x0F08, cdns_phy->sd_base + CMN_PDIAG_PLL0_FILT_PADJ_M0);
writel(0x0004, cdns_phy->sd_base + CMN_PLL0_DSM_DIAG_M0);
writel(0x00FA, cdns_phy->sd_base + CMN_PLL0_VCOCAL_INIT_TMR);
writel(0x0004, cdns_phy->sd_base + CMN_PLL0_VCOCAL_ITER_TMR);
writel(0x00FA, cdns_phy->sd_base + CMN_PLL1_VCOCAL_INIT_TMR);
writel(0x0004, cdns_phy->sd_base + CMN_PLL1_VCOCAL_ITER_TMR);
writel(0x0318, cdns_phy->sd_base + CMN_PLL0_VCOCAL_REFTIM_START);
cdns_torrent_phy_write(cdns_phy, CMN_PDIAG_PLL0_CP_PADJ_M0, 0x0409);
cdns_torrent_phy_write(cdns_phy, CMN_PDIAG_PLL0_CP_IADJ_M0, 0x1001);
cdns_torrent_phy_write(cdns_phy, CMN_PDIAG_PLL0_FILT_PADJ_M0, 0x0F08);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_DSM_DIAG_M0, 0x0004);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_VCOCAL_INIT_TMR, 0x00FA);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_VCOCAL_ITER_TMR, 0x0004);
cdns_torrent_phy_write(cdns_phy, CMN_PLL1_VCOCAL_INIT_TMR, 0x00FA);
cdns_torrent_phy_write(cdns_phy, CMN_PLL1_VCOCAL_ITER_TMR, 0x0004);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_VCOCAL_REFTIM_START, 0x0318);
}
static
@ -269,41 +278,41 @@ void cdns_torrent_dp_pma_cmn_vco_cfg_25mhz(struct cdns_torrent_phy *cdns_phy)
{
/* Assumes 25 MHz refclock */
switch (cdns_phy->max_bit_rate) {
/* Setting VCO for 10.8GHz */
/* Setting VCO for 10.8GHz */
case 2700:
case 5400:
writel(0x01B0, cdns_phy->sd_base + CMN_PLL0_INTDIV_M0);
writel(0x0000, cdns_phy->sd_base + CMN_PLL0_FRACDIVL_M0);
writel(0x0002, cdns_phy->sd_base + CMN_PLL0_FRACDIVH_M0);
writel(0x0120, cdns_phy->sd_base + CMN_PLL0_HIGH_THR_M0);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_INTDIV_M0, 0x01B0);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVL_M0, 0x0000);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_HIGH_THR_M0, 0x0120);
break;
/* Setting VCO for 9.72GHz */
/* Setting VCO for 9.72GHz */
case 2430:
case 3240:
writel(0x0184, cdns_phy->sd_base + CMN_PLL0_INTDIV_M0);
writel(0xCCCD, cdns_phy->sd_base + CMN_PLL0_FRACDIVL_M0);
writel(0x0002, cdns_phy->sd_base + CMN_PLL0_FRACDIVH_M0);
writel(0x0104, cdns_phy->sd_base + CMN_PLL0_HIGH_THR_M0);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_INTDIV_M0, 0x0184);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVL_M0, 0xCCCD);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_HIGH_THR_M0, 0x0104);
break;
/* Setting VCO for 8.64GHz */
/* Setting VCO for 8.64GHz */
case 2160:
case 4320:
writel(0x0159, cdns_phy->sd_base + CMN_PLL0_INTDIV_M0);
writel(0x999A, cdns_phy->sd_base + CMN_PLL0_FRACDIVL_M0);
writel(0x0002, cdns_phy->sd_base + CMN_PLL0_FRACDIVH_M0);
writel(0x00E7, cdns_phy->sd_base + CMN_PLL0_HIGH_THR_M0);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_INTDIV_M0, 0x0159);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVL_M0, 0x999A);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_HIGH_THR_M0, 0x00E7);
break;
/* Setting VCO for 8.1GHz */
/* Setting VCO for 8.1GHz */
case 8100:
writel(0x0144, cdns_phy->sd_base + CMN_PLL0_INTDIV_M0);
writel(0x0000, cdns_phy->sd_base + CMN_PLL0_FRACDIVL_M0);
writel(0x0002, cdns_phy->sd_base + CMN_PLL0_FRACDIVH_M0);
writel(0x00D8, cdns_phy->sd_base + CMN_PLL0_HIGH_THR_M0);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_INTDIV_M0, 0x0144);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVL_M0, 0x0000);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_FRACDIVH_M0, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_HIGH_THR_M0, 0x00D8);
break;
}
writel(0x0002, cdns_phy->sd_base + CMN_PDIAG_PLL0_CTRL_M0);
writel(0x0318, cdns_phy->sd_base + CMN_PLL0_VCOCAL_PLLCNT_START);
cdns_torrent_phy_write(cdns_phy, CMN_PDIAG_PLL0_CTRL_M0, 0x0002);
cdns_torrent_phy_write(cdns_phy, CMN_PLL0_VCOCAL_PLLCNT_START, 0x0318);
}
static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy)
@ -313,7 +322,7 @@ static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy)
unsigned int i;
/* 16'h0000 for single DP link configuration */
writel(0x0000, cdns_phy->sd_base + PHY_PLL_CFG);
cdns_torrent_phy_write(cdns_phy, PHY_PLL_CFG, 0x0000);
switch (cdns_phy->max_bit_rate) {
case 1620:
@ -324,7 +333,7 @@ static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy)
case 2430:
case 2700:
clk_sel_val = 0x0701;
hsclk_div_val = 1;
hsclk_div_val = 1;
break;
case 3240:
clk_sel_val = 0x0b00;
@ -341,13 +350,14 @@ static void cdns_torrent_dp_pma_cmn_rate(struct cdns_torrent_phy *cdns_phy)
break;
}
writel(clk_sel_val, cdns_phy->sd_base + CMN_PDIAG_PLL0_CLK_SEL_M0);
cdns_torrent_phy_write(cdns_phy,
CMN_PDIAG_PLL0_CLK_SEL_M0, clk_sel_val);
/* PMA lane configuration to deal with multi-link operation */
for (i = 0; i < cdns_phy->num_lanes; i++) {
writel(hsclk_div_val,
cdns_phy->sd_base + (XCVR_DIAG_HSCLK_DIV | (i << 11)));
}
for (i = 0; i < cdns_phy->num_lanes; i++)
cdns_torrent_phy_write(cdns_phy,
(XCVR_DIAG_HSCLK_DIV | (i << 11)),
hsclk_div_val);
}
static void cdns_torrent_dp_pma_lane_cfg(struct cdns_torrent_phy *cdns_phy,
@ -356,15 +366,17 @@ static void cdns_torrent_dp_pma_lane_cfg(struct cdns_torrent_phy *cdns_phy,
unsigned int lane_bits = (lane & LANE_MASK) << 11;
/* Writing Tx/Rx Power State Controllers registers */
writel(0x00FB, cdns_phy->sd_base + (TX_PSC_A0 | lane_bits));
writel(0x04AA, cdns_phy->sd_base + (TX_PSC_A2 | lane_bits));
writel(0x04AA, cdns_phy->sd_base + (TX_PSC_A3 | lane_bits));
writel(0x0000, cdns_phy->sd_base + (RX_PSC_A0 | lane_bits));
writel(0x0000, cdns_phy->sd_base + (RX_PSC_A2 | lane_bits));
writel(0x0000, cdns_phy->sd_base + (RX_PSC_A3 | lane_bits));
cdns_torrent_phy_write(cdns_phy, (TX_PSC_A0 | lane_bits), 0x00FB);
cdns_torrent_phy_write(cdns_phy, (TX_PSC_A2 | lane_bits), 0x04AA);
cdns_torrent_phy_write(cdns_phy, (TX_PSC_A3 | lane_bits), 0x04AA);
cdns_torrent_phy_write(cdns_phy, (RX_PSC_A0 | lane_bits), 0x0000);
cdns_torrent_phy_write(cdns_phy, (RX_PSC_A2 | lane_bits), 0x0000);
cdns_torrent_phy_write(cdns_phy, (RX_PSC_A3 | lane_bits), 0x0000);
writel(0x0001, cdns_phy->sd_base + (XCVR_DIAG_PLLDRC_CTRL | lane_bits));
writel(0x0000, cdns_phy->sd_base + (XCVR_DIAG_HSCLK_SEL | lane_bits));
cdns_torrent_phy_write(cdns_phy,
(XCVR_DIAG_PLLDRC_CTRL | lane_bits), 0x0001);
cdns_torrent_phy_write(cdns_phy,
(XCVR_DIAG_HSCLK_SEL | lane_bits), 0x0000);
}
static void cdns_torrent_dp_run(struct cdns_torrent_phy *cdns_phy)