1 /*
2 * Copyright (c) 2018-2021, ARM Limited and Contributors. All rights reserved.
3 *
4 * SPDX-License-Identifier: BSD-3-Clause
5 */
6
7 #include <assert.h>
8
9 #include <platform_def.h>
10
11 #include <common/debug.h>
12 #include <drivers/console.h>
13 #include <drivers/mmc.h>
14 #include <lib/utils.h>
15
16 #include <imx_caam.h>
17 #include <imx_clock.h>
18 #include <imx_io_mux.h>
19 #include <imx_uart.h>
20 #include <imx_usdhc.h>
21 #include <imx7_def.h>
22
23 #define UART1_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
24 CCM_TRGT_MUX_UART1_CLK_ROOT_OSC_24M)
25
26 #define UART6_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
27 CCM_TRGT_MUX_UART6_CLK_ROOT_OSC_24M)
28
29 #define USDHC_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
30 CCM_TRGT_MUX_NAND_USDHC_BUS_CLK_ROOT_AHB |\
31 CCM_TARGET_POST_PODF(2))
32
33 #define USB_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
34 CCM_TRGT_MUX_USB_HSIC_CLK_ROOT_SYS_PLL)
35
36 #define WARP7_UART1_TX_MUX \
37 IOMUXC_SW_MUX_CTL_PAD_UART1_TX_DATA_ALT0_UART1_TX_DATA
38
39 #define WARP7_UART1_TX_FEATURES \
40 (IOMUXC_SW_PAD_CTL_PAD_UART1_TX_DATA_PS_3_100K_PU | \
41 IOMUXC_SW_PAD_CTL_PAD_UART1_TX_DATA_PE_EN | \
42 IOMUXC_SW_PAD_CTL_PAD_UART1_TX_DATA_HYS_EN | \
43 IOMUXC_SW_PAD_CTL_PAD_UART1_TX_DATA_DSE_1_X4)
44
45 #define WARP7_UART1_RX_MUX \
46 IOMUXC_SW_MUX_CTL_PAD_UART1_RX_DATA_ALT0_UART1_RX_DATA
47
48 #define WARP7_UART1_RX_FEATURES \
49 (IOMUXC_SW_PAD_CTL_PAD_UART1_RX_DATA_PS_3_100K_PU | \
50 IOMUXC_SW_PAD_CTL_PAD_UART1_RX_DATA_PE_EN | \
51 IOMUXC_SW_PAD_CTL_PAD_UART1_RX_DATA_HYS_EN | \
52 IOMUXC_SW_PAD_CTL_PAD_UART1_RX_DATA_DSE_1_X4)
53
54 #define WARP7_UART6_TX_MUX \
55 IOMUXC_SW_MUX_CTL_PAD_ECSPI1_MOSI_ALT1_UART6_TX_DATA
56
57 #define WARP7_UART6_TX_FEATURES \
58 (IOMUXC_SW_PAD_CTL_PAD_ECSPI1_MOSI_PS_3_100K_PU | \
59 IOMUXC_SW_PAD_CTL_PAD_ECSPI1_MOSI_PE_EN | \
60 IOMUXC_SW_PAD_CTL_PAD_ECSPI1_MOSI_HYS_EN | \
61 IOMUXC_SW_PAD_CTL_PAD_ECSPI1_MOSI_DSE_1_X4)
62
63 #define WARP7_UART6_RX_MUX \
64 IOMUXC_SW_MUX_CTL_PAD_ECSPI1_SCLK_ALT1_UART6_RX_DATA
65
66 #define WARP7_UART6_RX_FEATURES \
67 (IOMUXC_SW_PAD_CTL_PAD_ECSPI1_SCLK_PS_3_100K_PU | \
68 IOMUXC_SW_PAD_CTL_PAD_ECSPI1_SCLK_PE_EN | \
69 IOMUXC_SW_PAD_CTL_PAD_ECSPI1_SCLK_HYS_EN | \
70 IOMUXC_SW_PAD_CTL_PAD_ECSPI1_SCLK_DSE_1_X4)
71
72 static struct mmc_device_info mmc_info;
73
warp7_setup_pinmux(void)74 static void warp7_setup_pinmux(void)
75 {
76 /* Configure UART1 TX */
77 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_UART1_TX_DATA_OFFSET,
78 WARP7_UART1_TX_MUX);
79 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_UART1_TX_DATA_OFFSET,
80 WARP7_UART1_TX_FEATURES);
81
82 /* Configure UART1 RX */
83 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_UART1_RX_DATA_OFFSET,
84 WARP7_UART1_RX_MUX);
85 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_UART1_RX_DATA_OFFSET,
86 WARP7_UART1_RX_FEATURES);
87
88 /* Configure UART6 TX */
89 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_ECSPI1_MOSI_OFFSET,
90 WARP7_UART6_TX_MUX);
91 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_ECSPI1_MOSI_OFFSET,
92 WARP7_UART6_TX_FEATURES);
93
94 /* Configure UART6 RX */
95 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_ECSPI1_SCLK_OFFSET,
96 WARP7_UART6_RX_MUX);
97 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_ECSPI1_SCLK_OFFSET,
98 WARP7_UART6_RX_FEATURES);
99 }
100
warp7_usdhc_setup(void)101 static void warp7_usdhc_setup(void)
102 {
103 imx_usdhc_params_t params;
104
105 zeromem(¶ms, sizeof(imx_usdhc_params_t));
106 params.reg_base = PLAT_WARP7_BOOT_MMC_BASE;
107 params.clk_rate = 25000000;
108 params.bus_width = MMC_BUS_WIDTH_8;
109 mmc_info.mmc_dev_type = MMC_IS_EMMC;
110 imx_usdhc_init(¶ms, &mmc_info);
111 }
112
warp7_setup_usb_clocks(void)113 static void warp7_setup_usb_clocks(void)
114 {
115 uint32_t usb_en_bits = (uint32_t)USB_CLK_SELECT;
116
117 imx_clock_set_usb_clk_root_bits(usb_en_bits);
118 imx_clock_enable_usb(CCM_CCGR_ID_USB_IPG);
119 imx_clock_enable_usb(CCM_CCGR_ID_USB_PHY_480MCLK);
120 imx_clock_enable_usb(CCM_CCGR_ID_USB_OTG1_PHY);
121 imx_clock_enable_usb(CCM_CCGR_ID_USB_OTG2_PHY);
122 }
123
imx7_platform_setup(u_register_t arg1,u_register_t arg2,u_register_t arg3,u_register_t arg4)124 void imx7_platform_setup(u_register_t arg1, u_register_t arg2,
125 u_register_t arg3, u_register_t arg4)
126 {
127 uint32_t uart1_en_bits = (uint32_t)UART1_CLK_SELECT;
128 uint32_t uart6_en_bits = (uint32_t)UART6_CLK_SELECT;
129 uint32_t usdhc_clock_sel = PLAT_WARP7_SD - 1;
130
131 /* Initialize clocks etc */
132 imx_clock_enable_uart(0, uart1_en_bits);
133 imx_clock_enable_uart(5, uart6_en_bits);
134
135 imx_clock_enable_usdhc(usdhc_clock_sel, USDHC_CLK_SELECT);
136
137 warp7_setup_usb_clocks();
138
139 /* Setup pin-muxes */
140 warp7_setup_pinmux();
141
142 warp7_usdhc_setup();
143 }
144