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Merge "drivers: marvell: comphy-a3700: support SGMII COMPHY power off" into integration

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Mark Dykes 2019-12-18 16:31:22 +00:00 • committed by TrustedFirmware Code Review
commit 31645dde0b
1 changed files with 69 additions and 0 deletions
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69
drivers/marvell/comphy/phy-comphy-3700.c
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@ -195,6 +195,45 @@ error:
ERROR("COMPHY[%d] mode[%d] is invalid\n", comphy_index, mode);
}
/*
* This is something like the inverse of the previous function: for given
* lane it returns COMPHY_*_MODE.
*
* It is useful when powering the phy off.
*
* This function returns COMPHY_USB3_MODE even if the phy was configured
* with COMPHY_USB3D_MODE or COMPHY_USB3H_MODE. (The usb3 phy initialization
* code does not differentiate between these modes.)
* Also it returns COMPHY_SGMII_MODE even if the phy was configures with
* COMPHY_HS_SGMII_MODE. (The sgmii phy initialization code does differentiate
* between these modes, but it is irrelevant when powering the phy off.)
*/
static int mvebu_a3700_comphy_get_mode(uint8_t comphy_index)
{
uint32_t reg;
reg = mmio_read_32(MVEBU_COMPHY_REG_BASE + COMPHY_SELECTOR_PHY_REG);
switch (comphy_index) {
case COMPHY_LANE0:
if ((reg & COMPHY_SELECTOR_USB3_GBE1_SEL_BIT) != 0)
return COMPHY_USB3_MODE;
else
return COMPHY_SGMII_MODE;
case COMPHY_LANE1:
if ((reg & COMPHY_SELECTOR_PCIE_GBE0_SEL_BIT) != 0)
return COMPHY_PCIE_MODE;
else
return COMPHY_SGMII_MODE;
case COMPHY_LANE2:
if ((reg & COMPHY_SELECTOR_USB3_PHY_SEL_BIT) != 0)
return COMPHY_USB3_MODE;
else
return COMPHY_SATA_MODE;
}
return COMPHY_UNUSED;
}
/* It is only used for SATA and USB3 on comphy lane2. */
static void comphy_set_indirect(uintptr_t addr, uint32_t offset, uint16_t data,
uint16_t mask, int mode)
@ -547,6 +586,23 @@ static int mvebu_a3700_comphy_sgmii_power_on(uint8_t comphy_index,
return ret;
}
static int mvebu_a3700_comphy_sgmii_power_off(uint8_t comphy_index)
{
int ret = 0;
uint32_t mask, data, offset;
debug_enter();
data = PIN_RESET_CORE_BIT | PIN_RESET_COMPHY_BIT;
mask = 0;
offset = MVEBU_COMPHY_REG_BASE + COMPHY_PHY_CFG1_OFFSET(comphy_index);
reg_set(offset, data, mask);
debug_exit();
return ret;
}
static int mvebu_a3700_comphy_usb3_power_on(uint8_t comphy_index,
uint32_t comphy_mode)
{
@ -908,7 +964,20 @@ int mvebu_3700_comphy_power_off(uint8_t comphy_index, uint32_t comphy_mode)
debug_enter();
if (!mode) {
/*
* The user did not specify which mode should be powered off.
* In this case we can identify this by reading the phy selector
* register.
*/
mode = mvebu_a3700_comphy_get_mode(comphy_index);
}
switch (mode) {
case(COMPHY_SGMII_MODE):
case(COMPHY_HS_SGMII_MODE):
err = mvebu_a3700_comphy_sgmii_power_off(comphy_index);
break;
case (COMPHY_USB3_MODE):
case (COMPHY_USB3H_MODE):
err = mvebu_a3700_comphy_usb3_power_off();