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/*
* Copyright (C) 2014, STMicroelectronics - All Rights Reserved
* Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <asm/io.h>
#include <asm/arch/stv0991_creg.h>
#include <asm/arch/stv0991_periph.h>
#include <asm/arch/hardware.h>
static struct stv0991_creg *const stv0991_creg = \
(struct stv0991_creg *)CREG_BASE_ADDR;
int stv0991_pinmux_config(int peripheral)
{
switch (peripheral) {
case UART_GPIOC_30_31:
/* SSDA/SSCL pad muxing to UART Rx/Dx */
writel((readl(&stv0991_creg->mux12) & GPIOC_31_MUX_MASK) |
CFG_GPIOC_31_UART_RX,
&stv0991_creg->mux12);
writel((readl(&stv0991_creg->mux12) & GPIOC_30_MUX_MASK) |
CFG_GPIOC_30_UART_TX,
&stv0991_creg->mux12);
/* SSDA/SSCL pad config to push pull*/
writel((readl(&stv0991_creg->cfg_pad6) & GPIOC_31_MODE_MASK) |
CFG_GPIOC_31_MODE_PP,
&stv0991_creg->cfg_pad6);
writel((readl(&stv0991_creg->cfg_pad6) & GPIOC_30_MODE_MASK) |
CFG_GPIOC_30_MODE_HIGH,
&stv0991_creg->cfg_pad6);
break;
case UART_GPIOB_16_17:
/* ethernet rx_6/7 to UART Rx/Dx */
writel((readl(&stv0991_creg->mux7) & GPIOB_17_MUX_MASK) |
CFG_GPIOB_17_UART_RX,
&stv0991_creg->mux7);
writel((readl(&stv0991_creg->mux7) & GPIOB_16_MUX_MASK) |
CFG_GPIOB_16_UART_TX,
&stv0991_creg->mux7);
break;
case ETH_GPIOB_10_31_C_0_4:
writel(readl(&stv0991_creg->mux6) & 0x000000FF,
&stv0991_creg->mux6);
writel(0x00000000, &stv0991_creg->mux7);
writel(0x00000000, &stv0991_creg->mux8);
writel(readl(&stv0991_creg->mux9) & 0xFFF00000,
&stv0991_creg->mux9);
/* Ethernet Voltage configuration to 1.8V*/
writel((readl(&stv0991_creg->vdd_pad1) & VDD_ETH_PS_MASK) |
ETH_VDD_CFG, &stv0991_creg->vdd_pad1);
writel((readl(&stv0991_creg->vdd_pad1) & VDD_ETH_PS_MASK) |
ETH_M_VDD_CFG, &stv0991_creg->vdd_pad1);
break;
case QSPI_CS_CLK_PAD:
writel((readl(&stv0991_creg->mux13) & FLASH_CS_NC_MASK) |
CFG_FLASH_CS_NC, &stv0991_creg->mux13);
writel((readl(&stv0991_creg->mux13) & FLASH_CLK_MASK) |
CFG_FLASH_CLK, &stv0991_creg->mux13);
default:
break;
}
return 0;
}
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