GitHub-Mirror/u-boot
2
0
Fork 0
mirror of https://github.com/Fishwaldo/u-boot.git synced 2025-03-15 19:51:37 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

net: phy: motorcomm: add Pad Drive Strength Cfg

Browse source 
YT8531 supports Pad Drive Strength configuration.
Including rx_data/rx_clk, etc.

Signed-off-by: Samin Guo <samin.guo@starfivetech.com>
This commit is contained in:
Samin Guo 2023-04-17 19:35:45 +08:00
parent 09e0370260
commit b6aaea9aad
1 changed files with 20 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

22
drivers/net/phy/motorcomm.c
View file

@ -40,6 +40,7 @@
#define YTPHY_SPEED_MODE 0xc000
#define YTPHY_SPEED_MODE_BIT 14
#define YTPHY_RGMII_SW_DR_MASK GENMASK(5, 4)
#define YTPHY_RGMII_RXC_DR_MASK GENMASK(15, 13)
#define YT8521_EXT_CLK_GATE 0xc
#define YT8521_EN_SLEEP_SW_BIT 15
@ -73,6 +74,12 @@ struct ytphy_reg_field {
const u8 dflt; /* Default value */
};
static const struct ytphy_reg_field ytphy_dr_grp[] = {
{ "rgmii_sw_dr", 2, 4, 0x3},
{ "rgmii_sw_dr_2", 1, 12, 0x0},
{ "rgmii_sw_dr_rxc", 3, 13, 0x3}
};
static const struct ytphy_reg_field ytphy_rxtxd_grp[] = {
{ "rx_delay_sel", 4, 10, 0x0 },
{ "tx_delay_sel_fe", 4, 4, 0xf },
@ -228,9 +235,20 @@ static int ytphy_of_config(struct phy_device *phydev)
ytphy_write_ext(phydev, YTPHY_EXTREG_CHIP_CONFIG, val);
}
/* set drive strenght of rxd/rx_ctl rgmii pad */
val = ytphy_read_ext(phydev, YTPHY_PAD_DRIVES_STRENGTH_CFG);
val |= YTPHY_RGMII_SW_DR_MASK;
for (i = 0; i < ARRAY_SIZE(ytphy_dr_grp); i++) {
cfg = ofnode_read_u32_default(node,
ytphy_dr_grp[i].name, ~0);
cfg = (cfg != -1) ? cfg : ytphy_dr_grp[i].dflt;
/*check the cfg overflow or not*/
cfg = (cfg > ((1 << ytphy_dr_grp[i].size) - 1)) ?
((1 << ytphy_dr_grp[i].size) - 1) : cfg;
val = bitfield_replace(val, ytphy_dr_grp[i].off,
ytphy_dr_grp[i].size, cfg);
}
ytphy_write_ext(phydev, YTPHY_PAD_DRIVES_STRENGTH_CFG, val);
val = ytphy_read_ext(phydev, YTPHY_EXTREG_RGMII_CONFIG1);