diff options
| author | Mingkai Hu <Mingkai.Hu@freescale.com> | 2015-10-26 19:47:50 +0800 |
|---|---|---|
| committer | York Sun <yorksun@freescale.com> | 2015-10-29 10:34:00 -0700 |
| commit | 9f3183d2d69f6d392fb943d249934f8648531e7e (patch) | |
| tree | a122bb60c3b3df518d476a1fa971e3ba17365c7f /arch/arm/cpu/armv8/fsl-layerscape/soc.c | |
| parent | 23e1acaf4b2863917247a925c81f6ce5a4eadcc2 (diff) | |
armv8/fsl_lsch3: Change arch to fsl-layerscape
There are two LS series processors are built on ARMv8 Layersacpe
architecture currently, LS2085A and LS1043A. They are based on
ARMv8 core although use different chassis, so create fsl-layerscape
to refactor the common code for the LS series processors which also
paves the way for adding LS1043A platform.
Signed-off-by: Mingkai Hu <Mingkai.Hu@freescale.com>
Signed-off-by: Hou Zhiqiang <B48286@freescale.com>
Signed-off-by: Gong Qianyu <Qianyu.Gong@freescale.com>
Reviewed-by: York Sun <yorksun@freescale.com>
Diffstat (limited to 'arch/arm/cpu/armv8/fsl-layerscape/soc.c')
| -rw-r--r-- | arch/arm/cpu/armv8/fsl-layerscape/soc.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv8/fsl-layerscape/soc.c b/arch/arm/cpu/armv8/fsl-layerscape/soc.c new file mode 100644 index 0000000000..73e48a7d58 --- /dev/null +++ b/arch/arm/cpu/armv8/fsl-layerscape/soc.c @@ -0,0 +1,86 @@ +/* + * Copyright 2014-2015 Freescale Semiconductor + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#include <common.h> +#include <fsl_ifc.h> +#include <asm/arch/soc.h> +#include <asm/io.h> +#include <asm/global_data.h> + +DECLARE_GLOBAL_DATA_PTR; + +#ifdef CONFIG_LS2085A +static void erratum_a008751(void) +{ +#ifdef CONFIG_SYS_FSL_ERRATUM_A008751 + u32 __iomem *scfg = (u32 __iomem *)SCFG_BASE; + + writel(0x27672b2a, scfg + SCFG_USB3PRM1CR / 4); +#endif +} + +static void erratum_rcw_src(void) +{ +#if defined(CONFIG_SPL) + u32 __iomem *dcfg_ccsr = (u32 __iomem *)DCFG_BASE; + u32 __iomem *dcfg_dcsr = (u32 __iomem *)DCFG_DCSR_BASE; + u32 val; + + val = in_le32(dcfg_ccsr + DCFG_PORSR1 / 4); + val &= ~DCFG_PORSR1_RCW_SRC; + val |= DCFG_PORSR1_RCW_SRC_NOR; + out_le32(dcfg_dcsr + DCFG_DCSR_PORCR1 / 4, val); +#endif +} + +#define I2C_DEBUG_REG 0x6 +#define I2C_GLITCH_EN 0x8 +/* + * This erratum requires setting glitch_en bit to enable + * digital glitch filter to improve clock stability. + */ +static void erratum_a009203(void) +{ + u8 __iomem *ptr; +#ifdef CONFIG_SYS_I2C +#ifdef I2C1_BASE_ADDR + ptr = (u8 __iomem *)(I2C1_BASE_ADDR + I2C_DEBUG_REG); + + writeb(I2C_GLITCH_EN, ptr); +#endif +#ifdef I2C2_BASE_ADDR + ptr = (u8 __iomem *)(I2C2_BASE_ADDR + I2C_DEBUG_REG); + + writeb(I2C_GLITCH_EN, ptr); +#endif +#ifdef I2C3_BASE_ADDR + ptr = (u8 __iomem *)(I2C3_BASE_ADDR + I2C_DEBUG_REG); + + writeb(I2C_GLITCH_EN, ptr); +#endif +#ifdef I2C4_BASE_ADDR + ptr = (u8 __iomem *)(I2C4_BASE_ADDR + I2C_DEBUG_REG); + + writeb(I2C_GLITCH_EN, ptr); +#endif +#endif +} + +void fsl_lsch3_early_init_f(void) +{ + erratum_a008751(); + erratum_rcw_src(); + init_early_memctl_regs(); /* tighten IFC timing */ + erratum_a009203(); +} +#endif + +#ifdef CONFIG_BOARD_LATE_INIT +int board_late_init(void) +{ + return 0; +} +#endif |