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 UART5_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
24 CCM_TRGT_MUX_UART5_CLK_ROOT_OSC_24M)
25
26 #define USDHC_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
27 CCM_TRGT_MUX_NAND_USDHC_BUS_CLK_ROOT_AHB |\
28 CCM_TARGET_POST_PODF(2))
29
30 #define USB_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
31 CCM_TRGT_MUX_USB_HSIC_CLK_ROOT_SYS_PLL)
32
33 #define PICOPI_UART5_RX_MUX \
34 IOMUXC_SW_MUX_CTL_PAD_I2C4_SCL_ALT1_UART5_RX_DATA
35
36 #define PICOPI_UART5_TX_MUX \
37 IOMUXC_SW_MUX_CTL_PAD_I2C4_SDA_ALT1_UART5_TX_DATA
38
39 #define PICOPI_SD3_FEATURES \
40 (IOMUXC_SW_PAD_CTL_PAD_SD3_PU_47K | \
41 IOMUXC_SW_PAD_CTL_PAD_SD3_PE | \
42 IOMUXC_SW_PAD_CTL_PAD_SD3_HYS | \
43 IOMUXC_SW_PAD_CTL_PAD_SD3_SLEW_SLOW | \
44 IOMUXC_SW_PAD_CTL_PAD_SD3_DSE_3_X6)
45
46 static struct mmc_device_info mmc_info;
47
picopi_setup_pinmux(void)48 static void picopi_setup_pinmux(void)
49 {
50 /* Configure UART5 TX */
51 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_I2C4_SDA_OFFSET,
52 PICOPI_UART5_TX_MUX);
53 /* Configure UART5 RX */
54 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_I2C4_SCL_OFFSET,
55 PICOPI_UART5_RX_MUX);
56
57 /* Configure USDHC3 */
58 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_CLK_OFFSET, 0);
59 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_CMD_OFFSET, 0);
60 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA0_OFFSET, 0);
61 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA1_OFFSET, 0);
62 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA2_OFFSET, 0);
63 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA3_OFFSET, 0);
64 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA4_OFFSET, 0);
65 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA5_OFFSET, 0);
66 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA6_OFFSET, 0);
67 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA7_OFFSET, 0);
68 imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_GPIO1_IO14_OFFSET,
69 IOMUXC_SW_MUX_CTL_PAD_GPIO1_IO14_ALT1_SD3_CD_B);
70
71 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_CLK_OFFSET,
72 PICOPI_SD3_FEATURES);
73 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_CMD_OFFSET,
74 PICOPI_SD3_FEATURES);
75 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA0_OFFSET,
76 PICOPI_SD3_FEATURES);
77 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA1_OFFSET,
78 PICOPI_SD3_FEATURES);
79 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA2_OFFSET,
80 PICOPI_SD3_FEATURES);
81 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA3_OFFSET,
82 PICOPI_SD3_FEATURES);
83 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA4_OFFSET,
84 PICOPI_SD3_FEATURES);
85 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA5_OFFSET,
86 PICOPI_SD3_FEATURES);
87 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA6_OFFSET,
88 PICOPI_SD3_FEATURES);
89 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA7_OFFSET,
90 PICOPI_SD3_FEATURES);
91 imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_GPIO1_IO14_OFFSET,
92 PICOPI_SD3_FEATURES);
93 }
94
picopi_usdhc_setup(void)95 static void picopi_usdhc_setup(void)
96 {
97 imx_usdhc_params_t params;
98
99 zeromem(¶ms, sizeof(imx_usdhc_params_t));
100 params.reg_base = PLAT_PICOPI_BOOT_MMC_BASE;
101 params.clk_rate = 25000000;
102 params.bus_width = MMC_BUS_WIDTH_8;
103 mmc_info.mmc_dev_type = MMC_IS_EMMC;
104 imx_usdhc_init(¶ms, &mmc_info);
105 }
106
picopi_setup_usb_clocks(void)107 static void picopi_setup_usb_clocks(void)
108 {
109 uint32_t usb_en_bits = (uint32_t)USB_CLK_SELECT;
110
111 imx_clock_set_usb_clk_root_bits(usb_en_bits);
112 imx_clock_enable_usb(CCM_CCGR_ID_USB_IPG);
113 imx_clock_enable_usb(CCM_CCGR_ID_USB_PHY_480MCLK);
114 imx_clock_enable_usb(CCM_CCGR_ID_USB_OTG1_PHY);
115 imx_clock_enable_usb(CCM_CCGR_ID_USB_OTG2_PHY);
116 }
117
imx7_platform_setup(u_register_t arg1,u_register_t arg2,u_register_t arg3,u_register_t arg4)118 void imx7_platform_setup(u_register_t arg1, u_register_t arg2,
119 u_register_t arg3, u_register_t arg4)
120 {
121 uint32_t uart5_en_bits = (uint32_t)UART5_CLK_SELECT;
122 uint32_t usdhc_clock_sel = PLAT_PICOPI_SD - 1;
123
124 /* Initialize clocks etc */
125 imx_clock_enable_uart(4, uart5_en_bits);
126 imx_clock_enable_usdhc(usdhc_clock_sel, USDHC_CLK_SELECT);
127
128 picopi_setup_usb_clocks();
129
130 /* Setup pin-muxes */
131 picopi_setup_pinmux();
132
133 picopi_usdhc_setup();
134 }
135