u-boot/arch/arm/mach-socfpga/system_manager_s10.c
Ley Foon Tan 73175d04a9 arm: socfpga: stratix10: Add pinmux support for Stratix10 SoC
Add pinmux driver support for Stratix SoC

Signed-off-by: Chin Liang See <chin.liang.see@intel.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
2018-05-18 10:30:48 +02:00

91 lines
2.6 KiB
C

// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2016-2018 Intel Corporation <www.intel.com>
*
*/
#include <common.h>
#include <asm/io.h>
#include <asm/arch/system_manager.h>
DECLARE_GLOBAL_DATA_PTR;
static struct socfpga_system_manager *sysmgr_regs =
(struct socfpga_system_manager *)SOCFPGA_SYSMGR_ADDRESS;
/*
* Configure all the pin muxes
*/
void sysmgr_pinmux_init(void)
{
populate_sysmgr_pinmux();
populate_sysmgr_fpgaintf_module();
}
/*
* Populate the value for SYSMGR.FPGAINTF.MODULE based on pinmux setting.
* The value is not wrote to SYSMGR.FPGAINTF.MODULE but
* CONFIG_SYSMGR_ISWGRP_HANDOFF.
*/
void populate_sysmgr_fpgaintf_module(void)
{
u32 handoff_val = 0;
/* Enable the signal for those HPS peripherals that use FPGA. */
if (readl(&sysmgr_regs->nandusefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_NAND;
if (readl(&sysmgr_regs->sdmmcusefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_SDMMC;
if (readl(&sysmgr_regs->spim0usefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_SPIM0;
if (readl(&sysmgr_regs->spim1usefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_SPIM1;
writel(handoff_val, &sysmgr_regs->fpgaintf_en_2);
handoff_val = 0;
if (readl(&sysmgr_regs->rgmii0usefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_EMAC0;
if (readl(&sysmgr_regs->rgmii1usefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_EMAC1;
if (readl(&sysmgr_regs->rgmii2usefpga) == SYSMGR_FPGAINTF_USEFPGA)
handoff_val |= SYSMGR_FPGAINTF_EMAC2;
writel(handoff_val, &sysmgr_regs->fpgaintf_en_3);
}
/*
* Configure all the pin muxes
*/
void populate_sysmgr_pinmux(void)
{
const u32 *sys_mgr_table_u32;
unsigned int len, i;
/* setup the pin sel */
sysmgr_pinmux_table_sel(&sys_mgr_table_u32, &len);
for (i = 0; i < len; i = i + 2) {
writel(sys_mgr_table_u32[i + 1],
sys_mgr_table_u32[i] + (u8 *)&sysmgr_regs->pinsel0[0]);
}
/* setup the pin ctrl */
sysmgr_pinmux_table_ctrl(&sys_mgr_table_u32, &len);
for (i = 0; i < len; i = i + 2) {
writel(sys_mgr_table_u32[i + 1],
sys_mgr_table_u32[i] + (u8 *)&sysmgr_regs->ioctrl0[0]);
}
/* setup the fpga use */
sysmgr_pinmux_table_fpga(&sys_mgr_table_u32, &len);
for (i = 0; i < len; i = i + 2) {
writel(sys_mgr_table_u32[i + 1],
sys_mgr_table_u32[i] +
(u8 *)&sysmgr_regs->rgmii0usefpga);
}
/* setup the IO delay */
sysmgr_pinmux_table_delay(&sys_mgr_table_u32, &len);
for (i = 0; i < len; i = i + 2) {
writel(sys_mgr_table_u32[i + 1],
sys_mgr_table_u32[i] + (u8 *)&sysmgr_regs->iodelay0[0]);
}
}