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Date: Thu, 15 Jun 2023 13:06:17 -0700
From: Justin Chen <justin.chen@...adcom.com>
To: linux-phy@...ts.infradead.org
Cc: bcm-kernel-feedback-list@...adcom.com,
florian.fainelli@...adcom.com,
Justin Chen <justin.chen@...adcom.com>,
Justin Chen <justinpopo6@...il.com>,
Al Cooper <alcooperx@...il.com>, Vinod Koul <vkoul@...nel.org>,
Kishon Vijay Abraham I <kishon@...nel.org>,
linux-kernel@...r.kernel.org (open list:BROADCOM BRCMSTB USB2 and USB3
PHY DRIVER)
Subject: [PATCH 2/2] phy: usb: suppress OC condition for 7439b2
We hit a false positive OC for 7439b2 in DRD/device mode for the
second port. So disable the OC check for this use case. Add capability
to suppress OC condition for specific ports.
Signed-off-by: Justin Chen <justin.chen@...adcom.com>
---
drivers/phy/broadcom/phy-brcm-usb-init.c | 34 ++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)
diff --git a/drivers/phy/broadcom/phy-brcm-usb-init.c b/drivers/phy/broadcom/phy-brcm-usb-init.c
index a1ca83308f98..39536b6d96a9 100644
--- a/drivers/phy/broadcom/phy-brcm-usb-init.c
+++ b/drivers/phy/broadcom/phy-brcm-usb-init.c
@@ -35,6 +35,11 @@
#define USB_CTRL_SETUP_STRAP_IPP_SEL_MASK BIT(25) /* option */
#define USB_CTRL_SETUP_CC_DRD_MODE_ENABLE_MASK BIT(26) /* option */
#define USB_CTRL_SETUP_STRAP_CC_DRD_MODE_ENABLE_SEL_MASK BIT(27) /* opt */
+#define USB_CTRL_SETUP_OC_DISABLE_PORT0_MASK BIT(28)
+#define USB_CTRL_SETUP_OC_DISABLE_PORT1_MASK BIT(29)
+#define USB_CTRL_SETUP_OC_DISABLE_MASK GENMASK(29, 28) /* option */
+#define USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK BIT(30)
+#define USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK BIT(31)
#define USB_CTRL_SETUP_OC3_DISABLE_MASK GENMASK(31, 30) /* option */
#define USB_CTRL_PLL_CTL 0x04
#define USB_CTRL_PLL_CTL_PLL_SUSPEND_EN_MASK BIT(27)
@@ -114,6 +119,8 @@ enum {
USB_CTRL_SETUP_SCB2_EN_SELECTOR,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_SELECTOR,
USB_CTRL_SETUP_STRAP_IPP_SEL_SELECTOR,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_SELECTOR,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_SELECTOR,
USB_CTRL_SETUP_OC3_DISABLE_SELECTOR,
USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_SELECTOR,
USB_CTRL_USB_PM_BDC_SOFT_RESETB_SELECTOR,
@@ -190,6 +197,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
@@ -232,6 +241,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
@@ -253,6 +264,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
@@ -274,6 +287,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
@@ -295,6 +310,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
@@ -316,6 +333,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
+ 0, /* USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK */
+ 0, /* USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK */
0, /* USB_CTRL_SETUP_OC3_DISABLE_MASK */
USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
@@ -337,6 +356,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
@@ -358,6 +379,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
USB_CTRL_SETUP_SCB2_EN_MASK,
USB_CTRL_SETUP_SS_EHCI64BIT_EN_VAR_MASK,
0, /* USB_CTRL_SETUP_STRAP_IPP_SEL_MASK */
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK,
0, /* USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK */
@@ -379,6 +402,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK,
USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
@@ -400,6 +425,8 @@ usb_reg_bits_map_table[BRCM_FAMILY_COUNT][USB_CTRL_SELECTOR_COUNT] = {
0, /* USB_CTRL_SETUP_SCB2_EN_MASK */
0, /*USB_CTRL_SETUP_SS_EHCI64BIT_EN_MASK */
USB_CTRL_SETUP_STRAP_IPP_SEL_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT0_MASK,
+ USB_CTRL_SETUP_OC3_DISABLE_PORT1_MASK,
USB_CTRL_SETUP_OC3_DISABLE_MASK,
0, /* USB_CTRL_PLL_CTL_PLL_IDDQ_PWRDN_MASK */
USB_CTRL_USB_PM_BDC_SOFT_RESETB_MASK,
@@ -872,6 +899,13 @@ static void usb_init_common(struct brcm_usb_init_params *params)
brcmusb_memc_fix(params);
+ /* Workaround for false positive OC for 7439b2 in DRD/Device mode */
+ if ((params->family_id == 0x74390012) &&
+ (params->supported_port_modes != USB_CTLR_MODE_HOST)) {
+ USB_CTRL_SET(ctrl, SETUP, OC_DISABLE_PORT1);
+ USB_CTRL_SET_FAMILY(params, SETUP, OC3_DISABLE_PORT1);
+ }
+
if (USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1, PORT_MODE)) {
reg = brcm_usb_readl(USB_CTRL_REG(ctrl, USB_DEVICE_CTL1));
reg &= ~USB_CTRL_MASK_FAMILY(params, USB_DEVICE_CTL1,
--
2.7.4
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