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phy: marvell: fix pll initialization for second utmi port 

According to Design Reference Specification the PHY PLL and Calibration
register from PHY0 are shared for multi-port PHY. PLL control registers
inside other PHY channels are not used.

This commit reworks utmi device tree nodes in a way that common PHY PLL
registers are moved to main utmi node. Accordingly both child nodes
utmi-unit range is reduced and register offsets in utmi_phy.h are updated
to this change.

This fixes issues in scenarios when only utmi port1 was in use, which
resulted with lack of correct pll initialization.

Change-Id: Icc520dfa719f43a09493ab31f671efbe88872097
Signed-off-by: Grzegorz Jaszczyk <jaz@semihalf.com>
This commit is contained in:
Grzegorz Jaszczyk 2019-02-27 15:35:58 +01:00 committed by Stefan Roese
parent 76342ac5c8
commit a007f23626
3 changed files with 53 additions and 28 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
arch/arm/dts/armada-cp110.dtsi
View File

@ -192,22 +192,28 @@
max-lanes = <6>;
};
CP110_LABEL(utmi0): utmi@580000 {
compatible = "marvell,mvebu-utmi-2.6.0";
reg = <0x580000 0x1000>, /* utmi-unit */
<0x440420 0x4>, /* usb-cfg */
<0x440440 0x4>; /* utmi-cfg */
utmi-port = <UTMI_PHY_TO_USB3_HOST0>;
status = "disabled";
};
CP110_LABEL(utmi): utmi@580000 {
compatible = "marvell,mvebu-utmi";
reg = <0x580000 0xc>; /* utmi-common-pll */
#address-cells = <1>;
#size-cells = <1>;
CP110_LABEL(utmi0): utmi@58000c {
compatible = "marvell,mvebu-utmi-2.6.0";
reg = <0x58000c 0x100>,/* utmi-unit */
<0x440420 0x4>, /* usb-cfg */
<0x440440 0x4>; /* utmi-cfg */
utmi-port = <UTMI_PHY_TO_USB3_HOST0>;
status = "disabled";
};
CP110_LABEL(utmi1): utmi@581000 {
compatible = "marvell,mvebu-utmi-2.6.0";
reg = <0x581000 0x1000>, /* utmi-unit */
<0x440420 0x4>, /* usb-cfg */
<0x440444 0x4>; /* utmi-cfg */
utmi-port = <UTMI_PHY_TO_USB3_HOST1>;
status = "disabled";
CP110_LABEL(utmi1): utmi@58100c {
compatible = "marvell,mvebu-utmi-2.6.0";
reg = <0x58100c 0x100>,/* utmi-unit */
<0x440420 0x4>, /* usb-cfg */
<0x440444 0x4>; /* utmi-cfg */
utmi-port = <UTMI_PHY_TO_USB3_HOST1>;
status = "disabled";
};
};
CP110_LABEL(sdhci0): sdhci@780000 {

35
drivers/phy/marvell/comphy_cp110.c
View File

@ -55,6 +55,7 @@ DECLARE_GLOBAL_DATA_PTR;
#define COMPHY_UNIT_ID3 3
struct utmi_phy_data {
void __iomem *utmi_pll_addr;
void __iomem *utmi_base_addr;
void __iomem *usb_cfg_addr;
void __iomem *utmi_cfg_addr;
@ -264,7 +265,8 @@ static void comphy_utmi_power_down(u32 utmi_index, void __iomem *utmi_base_addr,
return;
}
static void comphy_utmi_phy_config(u32 utmi_index, void __iomem *utmi_base_addr,
static void comphy_utmi_phy_config(u32 utmi_index, void __iomem *utmi_pll_addr,
void __iomem *utmi_base_addr,
void __iomem *usb_cfg_addr,
void __iomem *utmi_cfg_addr,
u32 utmi_phy_port)
@ -282,10 +284,10 @@ static void comphy_utmi_phy_config(u32 utmi_index, void __iomem *utmi_base_addr,
/* Select LPFR - 0x0 for 25Mhz/5=5Mhz*/
mask |= UTMI_PLL_CTRL_SEL_LPFR_MASK;
data |= 0x0 << UTMI_PLL_CTRL_SEL_LPFR_OFFSET;
reg_set(utmi_base_addr + UTMI_PLL_CTRL_REG, data, mask);
reg_set(utmi_pll_addr + UTMI_PLL_CTRL_REG, data, mask);
/* Impedance Calibration Threshold Setting */
reg_set(utmi_base_addr + UTMI_CALIB_CTRL_REG,
reg_set(utmi_pll_addr + UTMI_CALIB_CTRL_REG,
0x7 << UTMI_CALIB_CTRL_IMPCAL_VTH_OFFSET,
UTMI_CALIB_CTRL_IMPCAL_VTH_MASK);
@ -322,7 +324,8 @@ static void comphy_utmi_phy_config(u32 utmi_index, void __iomem *utmi_base_addr,
return;
}
static int comphy_utmi_power_up(u32 utmi_index, void __iomem *utmi_base_addr,
static int comphy_utmi_power_up(u32 utmi_index, void __iomem *utmi_pll_addr,
void __iomem *utmi_base_addr,
void __iomem *usb_cfg_addr,
void __iomem *utmi_cfg_addr, u32 utmi_phy_port)
{
@ -341,7 +344,7 @@ static int comphy_utmi_power_up(u32 utmi_index, void __iomem *utmi_base_addr,
UTMI_CTRL_STATUS0_TEST_SEL_MASK);
debug("stage: Polling for PLL and impedance calibration done, and PLL ready done\n");
addr = utmi_base_addr + UTMI_CALIB_CTRL_REG;
addr = utmi_pll_addr + UTMI_CALIB_CTRL_REG;
data = UTMI_CALIB_CTRL_IMPCAL_DONE_MASK;
mask = data;
data = polling_with_timeout(addr, data, mask, 100);
@ -360,7 +363,7 @@ static int comphy_utmi_power_up(u32 utmi_index, void __iomem *utmi_base_addr,
ret = 0;
}
addr = utmi_base_addr + UTMI_PLL_CTRL_REG;
addr = utmi_pll_addr + UTMI_PLL_CTRL_REG;
data = UTMI_PLL_CTRL_PLL_RDY_MASK;
mask = data;
data = polling_with_timeout(addr, data, mask, 100);
@ -411,14 +414,16 @@ static void comphy_utmi_phy_init(u32 utmi_phy_count,
}
/* UTMI configure */
for (i = 0; i < utmi_phy_count; i++) {
comphy_utmi_phy_config(i, cp110_utmi_data[i].utmi_base_addr,
comphy_utmi_phy_config(i, cp110_utmi_data[i].utmi_pll_addr,
cp110_utmi_data[i].utmi_base_addr,
cp110_utmi_data[i].usb_cfg_addr,
cp110_utmi_data[i].utmi_cfg_addr,
cp110_utmi_data[i].utmi_phy_port);
}
/* UTMI Power up */
for (i = 0; i < utmi_phy_count; i++) {
if (!comphy_utmi_power_up(i, cp110_utmi_data[i].utmi_base_addr,
if (!comphy_utmi_power_up(i, cp110_utmi_data[i].utmi_pll_addr,
cp110_utmi_data[i].utmi_base_addr,
cp110_utmi_data[i].usb_cfg_addr,
cp110_utmi_data[i].utmi_cfg_addr,
cp110_utmi_data[i].utmi_phy_port)) {
@ -453,6 +458,7 @@ void comphy_dedicated_phys_init(void)
struct utmi_phy_data cp110_utmi_data[MAX_UTMI_PHY_COUNT];
int node = -1;
int node_idx;
int parent = -1;
debug_enter();
debug("Initialize USB UTMI PHYs\n");
@ -468,6 +474,19 @@ void comphy_dedicated_phys_init(void)
if (!fdtdec_get_is_enabled(gd->fdt_blob, node))
continue;
parent = fdt_parent_offset(gd->fdt_blob, node);
if (parent <= 0)
break;
/* get base address of UTMI PLL */
cp110_utmi_data[node_idx].utmi_pll_addr =
(void __iomem *)fdtdec_get_addr_size_auto_noparent(
gd->fdt_blob, parent, "reg", 0, NULL, true);
if (!cp110_utmi_data[node_idx].utmi_pll_addr) {
pr_err("UTMI PHY PLL address is invalid\n");
continue;
}
/* get base address of UTMI phy */
cp110_utmi_data[node_idx].utmi_base_addr =
(void __iomem *)fdtdec_get_addr_size_auto_noparent(

10
drivers/phy/marvell/utmi_phy.h
View File

@ -45,7 +45,7 @@
#define UTMI_CALIB_CTRL_PLLCAL_DONE_MASK \
(0x1 << UTMI_CALIB_CTRL_PLLCAL_DONE_OFFSET)
#define UTMI_TX_CH_CTRL_REG 0xC
#define UTMI_TX_CH_CTRL_REG 0x0
#define UTMI_TX_CH_CTRL_DRV_EN_LS_OFFSET 12
#define UTMI_TX_CH_CTRL_DRV_EN_LS_MASK \
(0xf << UTMI_TX_CH_CTRL_DRV_EN_LS_OFFSET)
@ -56,7 +56,7 @@
#define UTMI_TX_CH_CTRL_AMP_MASK \
(0x7 << UTMI_TX_CH_CTRL_AMP_OFFSET)
#define UTMI_RX_CH_CTRL0_REG 0x14
#define UTMI_RX_CH_CTRL0_REG 0x8
#define UTMI_RX_CH_CTRL0_SQ_DET_OFFSET 15
#define UTMI_RX_CH_CTRL0_SQ_DET_MASK \
(0x1 << UTMI_RX_CH_CTRL0_SQ_DET_OFFSET)
@ -64,7 +64,7 @@
#define UTMI_RX_CH_CTRL0_SQ_ANA_DTC_MASK \
(0x1 << UTMI_RX_CH_CTRL0_SQ_ANA_DTC_OFFSET)
#define UTMI_RX_CH_CTRL1_REG 0x18
#define UTMI_RX_CH_CTRL1_REG 0xc
#define UTMI_RX_CH_CTRL1_SQ_AMP_CAL_OFFSET 0
#define UTMI_RX_CH_CTRL1_SQ_AMP_CAL_MASK \
(0x7 << UTMI_RX_CH_CTRL1_SQ_AMP_CAL_OFFSET)
@ -72,7 +72,7 @@
#define UTMI_RX_CH_CTRL1_SQ_AMP_CAL_EN_MASK \
(0x1 << UTMI_RX_CH_CTRL1_SQ_AMP_CAL_EN_OFFSET)
#define UTMI_CTRL_STATUS0_REG 0x24
#define UTMI_CTRL_STATUS0_REG 0x18
#define UTMI_CTRL_STATUS0_SUSPENDM_OFFSET 22
#define UTMI_CTRL_STATUS0_SUSPENDM_MASK \
(0x1 << UTMI_CTRL_STATUS0_SUSPENDM_OFFSET)
@ -80,7 +80,7 @@
#define UTMI_CTRL_STATUS0_TEST_SEL_MASK \
(0x1 << UTMI_CTRL_STATUS0_TEST_SEL_OFFSET)
#define UTMI_CHGDTC_CTRL_REG 0x38
#define UTMI_CHGDTC_CTRL_REG 0x2c
#define UTMI_CHGDTC_CTRL_VDAT_OFFSET 8
#define UTMI_CHGDTC_CTRL_VDAT_MASK \
(0x3 << UTMI_CHGDTC_CTRL_VDAT_OFFSET)