Commit ef53b8c4 authored by Sriram Dash's avatar Sriram Dash Committed by Marek Vasut

usb: xhci: fsl: Add workaround for USB erratum A008751

This patch is doing the following:
1. Implementing the errata for LS2080.
2. Adding fixup for fdt for LS2080.
Signed-off-by: default avatarSriram Dash <sriram.dash@nxp.com>
Signed-off-by: default avatarRajesh Bhagat <rajesh.bhagat@nxp.com>
parent 32fbd46f
......@@ -139,6 +139,7 @@
/* Supplemental Configuration */
#define SCFG_BASE 0x01fc0000
#define SCFG_USB3PRM1CR 0x000
#define SCFG_USB3PRM1CR_INIT 0x27672b2a
#define TP_ITYP_AV 0x00000001 /* Initiator available */
#define TP_ITYP_TYPE(x) (((x) & 0x6) >> 1) /* Initiator Type */
......
......@@ -298,6 +298,8 @@ int ft_board_setup(void *blob, bd_t *bd)
fdt_fixup_memory_banks(blob, base, size, 2);
fdt_fixup_dr_usb(blob, bd);
#ifdef CONFIG_FSL_MC_ENET
fdt_fixup_board_enet(blob);
err = fsl_mc_ldpaa_exit(bd);
......
......@@ -281,6 +281,8 @@ int ft_board_setup(void *blob, bd_t *bd)
fdt_fixup_memory_banks(blob, base, size, 2);
fdt_fixup_dr_usb(blob, bd);
#ifdef CONFIG_FSL_MC_ENET
fdt_fixup_board_enet(blob);
err = fsl_mc_ldpaa_exit(bd);
......
......@@ -139,6 +139,7 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
int usb_erratum_a007075_off = -1;
int usb_erratum_a007792_off = -1;
int usb_erratum_a005697_off = -1;
int usb_erratum_a008751_off = -1;
int usb_mode_off = -1;
int usb_phy_off = -1;
char str[5];
......@@ -217,5 +218,11 @@ void fdt_fixup_dr_usb(void *blob, bd_t *bd)
has_erratum_a005697);
if (ret == -ENOSPC)
return;
ret = fdt_fixup_erratum(&usb_erratum_a008751_off, blob,
SNPS_DWC3, "a008751",
has_erratum_a008751);
if (ret == -ENOSPC)
return;
}
}
......@@ -175,4 +175,19 @@ bool has_erratum_a004477(void)
return false;
}
bool has_erratum_a008751(void)
{
u32 svr = get_svr();
u32 soc = SVR_SOC_VER(svr);
switch (soc) {
#ifdef CONFIG_ARM64
case SVR_LS2080:
case SVR_LS2085:
return IS_SVR_REV(svr, 1, 0);
#endif
}
return false;
}
#endif
......@@ -15,6 +15,8 @@
#include <linux/usb/xhci-fsl.h>
#include <linux/usb/dwc3.h>
#include "xhci.h"
#include <fsl_errata.h>
#include <fsl_usb.h>
/* Declare global data pointer */
DECLARE_GLOBAL_DATA_PTR;
......@@ -27,6 +29,26 @@ __weak int __board_usb_init(int index, enum usb_init_type init)
return 0;
}
static int erratum_a008751(void)
{
#if defined(CONFIG_TARGET_LS2080AQDS) || defined(CONFIG_TARGET_LS2080ARDB)
u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE;
writel(SCFG_USB3PRM1CR_INIT, scfg + SCFG_USB3PRM1CR / 4);
return 0;
#endif
return 1;
}
static void fsl_apply_xhci_errata(void)
{
int ret;
if (has_erratum_a008751()) {
ret = erratum_a008751();
if (ret != 0)
puts("Failed to apply erratum a008751\n");
}
}
static int fsl_xhci_core_init(struct fsl_xhci *fsl_xhci)
{
int ret = 0;
......@@ -69,6 +91,8 @@ int xhci_hcd_init(int index, struct xhci_hccr **hccr, struct xhci_hcor **hcor)
return ret;
}
fsl_apply_xhci_errata();
ret = fsl_xhci_core_init(ctx);
if (ret < 0) {
puts("Failed to initialize xhci\n");
......
......@@ -94,5 +94,6 @@ bool has_erratum_a007798(void);
bool has_erratum_a007792(void);
bool has_erratum_a005697(void);
bool has_erratum_a004477(void);
bool has_erratum_a008751(void);
#endif
#endif /*_ASM_FSL_USB_H_ */
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