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- // SPDX-License-Identifier: GPL-2.0+
- /*
- * Copyright (C) 2014, STMicroelectronics - All Rights Reserved
- * Author(s): Vikas Manocha, <vikas.manocha@st.com> for STMicroelectronics.
- */
- #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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