From be78d71880d4ea88bc42d7ea654c8517f9057c9a Mon Sep 17 00:00:00 2001 From: Suresh Gupta Date: Fri, 14 Oct 2016 12:34:56 +0530 Subject: armv8: Add workaround for USB erratum A-009007 USB3PHY Observing Intermittent Failure in Rx This patch is adding the erratum for LS1043 and LS2080 SoCs. But miss LS1088A due to code base not support LS1088A yet, need to be added in arch/arm/cpu/armv8/fsl-layerscape/Kconfig in the future. Signed-off-by: Sriram Dash Signed-off-by: Rajesh Bhagat Signed-off-by: yinbo.zhu Signed-off-by: ran.wang diff --git a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig index ccc4ed4..096137c 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/Kconfig +++ b/arch/arm/cpu/armv8/fsl-layerscape/Kconfig @@ -8,6 +8,7 @@ config ARCH_LS1012A select SYS_FSL_ERRATUM_A010315 select SYS_FSL_ERRATUM_A009798 select SYS_FSL_ERRATUM_A008997 + select SYS_FSL_ERRATUM_A009007 select ARCH_EARLY_INIT_R select BOARD_EARLY_INIT_F @@ -28,6 +29,7 @@ config ARCH_LS1043A select SYS_FSL_ERRATUM_A009942 select SYS_FSL_ERRATUM_A010315 select SYS_FSL_ERRATUM_A010539 + select SYS_FSL_ERRATUM_A009007 select SYS_FSL_HAS_DDR3 select SYS_FSL_HAS_DDR4 select ARCH_EARLY_INIT_R @@ -50,6 +52,7 @@ config ARCH_LS1046A select SYS_FSL_ERRATUM_A010165 select SYS_FSL_ERRATUM_A010539 select SYS_FSL_ERRATUM_A009798 + select SYS_FSL_ERRATUM_A009007 select SYS_FSL_HAS_DDR4 select SYS_FSL_SRDS_2 select ARCH_EARLY_INIT_R @@ -78,6 +81,7 @@ config ARCH_LS2080A select SYS_FSL_ERRATUM_A008511 select SYS_FSL_ERRATUM_A008514 select SYS_FSL_ERRATUM_A008585 + select SYS_FSL_ERRATUM_A009007 select SYS_FSL_ERRATUM_A009635 select SYS_FSL_ERRATUM_A009798 select SYS_FSL_ERRATUM_A008997 @@ -96,6 +100,7 @@ config FSL_LSCH2 select SYS_FSL_SEC_COMPAT_5 select SYS_FSL_SEC_BE select SYS_FSL_ERRATUM_A008997 + select SYS_FSL_ERRATUM_A009007 select SYS_FSL_SRDS_1 select SYS_HAS_SERDES @@ -104,6 +109,7 @@ config FSL_LSCH3 select SYS_FSL_SRDS_1 select SYS_HAS_SERDES select SYS_FSL_ERRATUM_A008997 + select SYS_FSL_ERRATUM_A009007 config FSL_MC_ENET bool "Management Complex network" diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c index e73612a..b6408cd 100644 --- a/arch/arm/cpu/armv8/fsl-layerscape/soc.c +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -72,6 +72,47 @@ static void erratum_a008997(void) #endif /* CONFIG_SYS_FSL_ERRATUM_A008997 */ } +static void erratum_a009007(void) +{ +/* TODO:implement the out_be16 instead of writew which is taking +little endian style */ +#if defined(CONFIG_LS1043A) || defined(CONFIG_LS1046A) + u32 __iomem *usb_phy = (u32 __iomem *)USB_PHY1; + writew(USB_PHY_RX_EQ_VAL_1, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_2, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_3, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_4, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + usb_phy = (u32 __iomem *)USB_PHY2; + writew(USB_PHY_RX_EQ_VAL_1, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_2, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_3, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_4, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + usb_phy = (u32 __iomem *)USB_PHY3; + writew(USB_PHY_RX_EQ_VAL_1, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_2, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_3, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_4, (u8 *)(usb_phy) + USB_PHY_RX_OVRD_IN_HI); +#elif defined(CONFIG_LS2080A) || defined(CONFIG_LS2085A) + u32 __iomem *dcsr = (u32 __iomem *)DCSR_BASE; + writew(USB_PHY_RX_EQ_VAL_1, + (u8 *)(dcsr) + DCSR_USB_PHY1 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_2, + (u8 *)(dcsr) + DCSR_USB_PHY1 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_3, + (u8 *)(dcsr) + DCSR_USB_PHY1 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_4, + (u8 *)(dcsr) + DCSR_USB_PHY1 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_1, + (u8 *)(dcsr) + DCSR_USB_PHY2 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_2, + (u8 *)(dcsr) + DCSR_USB_PHY2 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_3, + (u8 *)(dcsr) + DCSR_USB_PHY2 + DCSR_USB_PHY_RX_OVRD_IN_HI); + writew(USB_PHY_RX_EQ_VAL_4, + (u8 *)(dcsr) + DCSR_USB_PHY2 + DCSR_USB_PHY_RX_OVRD_IN_HI); +#endif /* CONFIG_SYS_FSL_ERRATUM_A009007 */ +} + bool soc_has_dp_ddr(void) { struct ccsr_gur __iomem *gur = (void *)(CONFIG_SYS_FSL_GUTS_ADDR); @@ -247,6 +288,7 @@ void fsl_lsch3_early_init_f(void) erratum_a009008(); erratum_a009798(); erratum_a008997(); + erratum_a009007(); #ifdef CONFIG_CHAIN_OF_TRUST /* In case of Secure Boot, the IBR configures the SMMU * to allow only Secure transactions. @@ -524,6 +566,7 @@ void fsl_lsch2_early_init_f(void) erratum_a010539(); erratum_a009798(); erratum_a008997(); + erratum_a009007(); } #endif diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h index 4fac487..9fd347b 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch2.h @@ -207,6 +207,18 @@ struct ccsr_gur { #define SCFG_USB3PRM2CR_USB3 0x08c #define USB_TXVREFTUNE 0x9 #define USB_SQRXTUNE 0xFC7FFFFF +#define USB_PCSTXSWINGFULL 0x47 +#define USB_PHY1 0x084F0000 +#define USB_PHY2 0x08500000 +#define USB_PHY3 0x08510000 +#define USB_PHY_RX_OVRD_IN_HI 0x200c +/* TODO : make it generic */ +#define USB_PHY_RX_EQ_VAL_1 0x0000 +#define USB_PHY_RX_EQ_VAL_2 0x8000 +#define USB_PHY_RX_EQ_VAL_3 0x8003 + +#define USB_PHY_RX_EQ_VAL_4 0x800b + u32 devdisr2; /* Device disable control 2 */ u32 devdisr3; /* Device disable control 3 */ diff --git a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h index b6be6ab..8bc4134 100644 --- a/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h +++ b/arch/arm/include/asm/arch-fsl-layerscape/immap_lsch3.h @@ -123,6 +123,13 @@ #define DCFG_RCWSR15_IFCGRPABASE_QSPI 0x3 #define DCFG_DCSR_BASE 0X700100000ULL +#define DCSR_USB_PHY1 0x4600000 +#define DCSR_USB_PHY2 0x4610000 +#define DCSR_USB_PHY_RX_OVRD_IN_HI 0x1006 +#define USB_PHY_RX_EQ_VAL_1 0x0000 +#define USB_PHY_RX_EQ_VAL_2 0x0080 +#define USB_PHY_RX_EQ_VAL_3 0x0380 +#define USB_PHY_RX_EQ_VAL_4 0x0b80 #define DCFG_DCSR_PORCR1 0x000 /* Interrupt Sampling Control */ -- cgit v0.10.2