1 /* 2 * (C) Copyright 2014 3 * Vikas Manocha, ST Micoelectronics, vikas.manocha@st.com. 4 * 5 * SPDX-License-Identifier: GPL-2.0+ 6 */ 7 8 #include <asm/io.h> 9 #include <asm/arch/stv0991_creg.h> 10 #include <asm/arch/stv0991_periph.h> 11 #include <asm/arch/hardware.h> 12 13 static struct stv0991_creg *const stv0991_creg = \ 14 (struct stv0991_creg *)CREG_BASE_ADDR; 15 16 int stv0991_pinmux_config(int peripheral) 17 { 18 switch (peripheral) { 19 case UART_GPIOC_30_31: 20 /* SSDA/SSCL pad muxing to UART Rx/Dx */ 21 writel((readl(&stv0991_creg->mux12) & GPIOC_31_MUX_MASK) | 22 CFG_GPIOC_31_UART_RX, 23 &stv0991_creg->mux12); 24 writel((readl(&stv0991_creg->mux12) & GPIOC_30_MUX_MASK) | 25 CFG_GPIOC_30_UART_TX, 26 &stv0991_creg->mux12); 27 /* SSDA/SSCL pad config to push pull*/ 28 writel((readl(&stv0991_creg->cfg_pad6) & GPIOC_31_MODE_MASK) | 29 CFG_GPIOC_31_MODE_PP, 30 &stv0991_creg->cfg_pad6); 31 writel((readl(&stv0991_creg->cfg_pad6) & GPIOC_30_MODE_MASK) | 32 CFG_GPIOC_30_MODE_HIGH, 33 &stv0991_creg->cfg_pad6); 34 break; 35 case UART_GPIOB_16_17: 36 /* ethernet rx_6/7 to UART Rx/Dx */ 37 writel((readl(&stv0991_creg->mux7) & GPIOB_17_MUX_MASK) | 38 CFG_GPIOB_17_UART_RX, 39 &stv0991_creg->mux7); 40 writel((readl(&stv0991_creg->mux7) & GPIOB_16_MUX_MASK) | 41 CFG_GPIOB_16_UART_TX, 42 &stv0991_creg->mux7); 43 break; 44 default: 45 break; 46 } 47 return 0; 48 } 49