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gerrit.cesnet.cz / github / trini / u-boot / 880b15a37b22ce516b24460e4bbedd9a6b055625 / . / arch / arm / cpu / armv7 / stv0991 / pinmux.c
blob: 1d086a235dbf5eb9f3d1d81e141b80d4a33b0179 [file] [log] [blame]
Vikas Manocha9fa32b12014-11-18 10:42:22 -0800[diff] [blame]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
13static struct stv0991_creg *const stv0991_creg = \
14 (struct stv0991_creg *)CREG_BASE_ADDR;
15
16int 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;
Vikas Manocha2ce4eaf2014-11-18 10:42:23 -0800[diff] [blame]44 case ETH_GPIOB_10_31_C_0_4:
45 writel(readl(&stv0991_creg->mux6) & 0x000000FF,
46 &stv0991_creg->mux6);
47 writel(0x00000000, &stv0991_creg->mux7);
48 writel(0x00000000, &stv0991_creg->mux8);
49 writel(readl(&stv0991_creg->mux9) & 0xFFF00000,
50 &stv0991_creg->mux9);
51 /* Ethernet Voltage configuration to 1.8V*/
52 writel((readl(&stv0991_creg->vdd_pad1) & VDD_ETH_PS_MASK) |
53 ETH_VDD_CFG, &stv0991_creg->vdd_pad1);
54 writel((readl(&stv0991_creg->vdd_pad1) & VDD_ETH_PS_MASK) |
55 ETH_M_VDD_CFG, &stv0991_creg->vdd_pad1);
56
57 break;
Vikas Manocha9fa32b12014-11-18 10:42:22 -0800[diff] [blame]58 default:
59 break;
60 }
61 return 0;
62}