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/*
* 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>
#include <asm/arch-fsl-layerscape/config.h>
DECLARE_GLOBAL_DATA_PTR;
#if defined(CONFIG_LS2080A) || defined(CONFIG_LS2085A)
#ifdef CONFIG_SYS_FSL_ERRATUM_A009635
#define PLATFORM_CYCLE_ENV_VAR "a009635_interval_val"
static unsigned long get_internval_val_mhz(void)
{
char *interval = getenv(PLATFORM_CYCLE_ENV_VAR);
/*
* interval is the number of platform cycles(MHz) between
* wake up events generated by EPU.
*/
ulong interval_mhz = get_bus_freq(0) / (1000 * 1000);
if (interval)
interval_mhz = simple_strtoul(interval, NULL, 10);
return interval_mhz;
}
void erratum_a009635(void)
{
u32 val;
unsigned long interval_mhz = get_internval_val_mhz();
if (!interval_mhz)
return;
val = in_le32(DCSR_CGACRE5);
writel(val | 0x00000200, DCSR_CGACRE5);
val = in_le32(EPU_EPCMPR5);
writel(interval_mhz, EPU_EPCMPR5);
val = in_le32(EPU_EPCCR5);
writel(val | 0x82820000, EPU_EPCCR5);
val = in_le32(EPU_EPSMCR5);
writel(val | 0x002f0000, EPU_EPSMCR5);
val = in_le32(EPU_EPECR5);
writel(val | 0x20000000, EPU_EPECR5);
val = in_le32(EPU_EPGCR);
writel(val | 0x80000000, EPU_EPGCR);
}
#endif /* CONFIG_SYS_FSL_ERRATUM_A009635 */
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();
}
#elif defined(CONFIG_LS1043A)
void fsl_lsch2_early_init_f(void)
{
struct ccsr_cci400 *cci = (struct ccsr_cci400 *)CONFIG_SYS_CCI400_ADDR;
#ifdef CONFIG_FSL_IFC
init_early_memctl_regs(); /* tighten IFC timing */
#endif
/*
* Enable snoop requests and DVM message requests for
* Slave insterface S4 (A53 core cluster)
*/
out_le32(&cci->slave[4].snoop_ctrl,
CCI400_DVM_MESSAGE_REQ_EN | CCI400_SNOOP_REQ_EN);
}
#endif
#ifdef CONFIG_BOARD_LATE_INIT
int board_late_init(void)
{
return 0;
}
#endif
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