commit d85efcfb78a6413c7805bf6cadcc48d31fe8e5bf
author Jun Nie <jun.nie@linaro.org> Thu Jun 13 11:47:09 2019 +0800
committer Jun Nie <jun.nie@linaro.org> Wed Jul 17 16:03:20 2019 +0800
tree ba2a48518be1c0c8d994c4bc8f71b9e9f132265a
parent 8cfd4b506c38ede065d5c6d96e7b3aba515571d1

plat: imx7: Add PicoPi iMX7D basic support

The PicoPi iMX7D is a 2 board development board consisting of
a System-on-Module and a carrier baseboard and optimized for
the Internet-of-Things (IoT).

This patch add basic support to this board.

Signed-off-by: Jun Nie <jun.nie@linaro.org>
Reviewed-by: Louis Mayencourt <louis.mayencourt@arm.com>
Change-Id: I009d85819c4f73b7063aab73d0f6ee74e6ef3fc4

plat/imx/imx7/picopi/picopi_bl2_el3_setup.c

diff --git a/plat/imx/imx7/picopi/picopi_bl2_el3_setup.c b/plat/imx/imx7/picopi/picopi_bl2_el3_setup.c
new file mode 100644
index 0000000..3cf5c36
--- /dev/null
+++ b/plat/imx/imx7/picopi/picopi_bl2_el3_setup.c
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2018-2019, ARM Limited and Contributors. All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <assert.h>
+
+#include <platform_def.h>
+
+#include <common/debug.h>
+#include <drivers/console.h>
+#include <drivers/mmc.h>
+#include <lib/utils.h>
+
+#include <imx_caam.h>
+#include <imx_clock.h>
+#include <imx_io_mux.h>
+#include <imx_uart.h>
+#include <imx_usdhc.h>
+#include <imx7_def.h>
+
+#define UART5_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
+			  CCM_TRGT_MUX_UART5_CLK_ROOT_OSC_24M)
+
+#define USDHC_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
+			  CCM_TRGT_MUX_NAND_USDHC_BUS_CLK_ROOT_AHB |\
+			  CCM_TARGET_POST_PODF(2))
+
+#define USB_CLK_SELECT (CCM_TARGET_ROOT_ENABLE |\
+			CCM_TRGT_MUX_USB_HSIC_CLK_ROOT_SYS_PLL)
+
+#define PICOPI_UART5_RX_MUX \
+	IOMUXC_SW_MUX_CTL_PAD_I2C4_SCL_ALT1_UART5_RX_DATA
+
+#define PICOPI_UART5_TX_MUX \
+	IOMUXC_SW_MUX_CTL_PAD_I2C4_SDA_ALT1_UART5_TX_DATA
+
+#define PICOPI_SD3_FEATURES \
+	(IOMUXC_SW_PAD_CTL_PAD_SD3_PU_47K            | \
+	 IOMUXC_SW_PAD_CTL_PAD_SD3_PE                | \
+	 IOMUXC_SW_PAD_CTL_PAD_SD3_HYS               | \
+	 IOMUXC_SW_PAD_CTL_PAD_SD3_SLEW_SLOW         | \
+	 IOMUXC_SW_PAD_CTL_PAD_SD3_DSE_3_X6)
+
+static void picopi_setup_pinmux(void)
+{
+	/* Configure UART5 TX */
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_I2C4_SDA_OFFSET,
+					 PICOPI_UART5_TX_MUX);
+	/* Configure UART5 RX */
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_I2C4_SCL_OFFSET,
+					 PICOPI_UART5_RX_MUX);
+
+	/* Configure USDHC3 */
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_CLK_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_CMD_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA0_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA1_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA2_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA3_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA4_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA5_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA6_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_SD3_DATA7_OFFSET, 0);
+	imx_io_muxc_set_pad_alt_function(IOMUXC_SW_MUX_CTL_PAD_GPIO1_IO14_OFFSET,
+					 IOMUXC_SW_MUX_CTL_PAD_GPIO1_IO14_ALT1_SD3_CD_B);
+
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_CLK_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_CMD_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA0_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA1_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA2_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA3_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA4_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA5_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA6_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_SD3_DATA7_OFFSET,
+				     PICOPI_SD3_FEATURES);
+	imx_io_muxc_set_pad_features(IOMUXC_SW_PAD_CTL_PAD_GPIO1_IO14_OFFSET,
+				     PICOPI_SD3_FEATURES);
+}
+
+static void picopi_usdhc_setup(void)
+{
+	imx_usdhc_params_t params;
+	struct mmc_device_info info;
+
+	zeromem(&params, sizeof(imx_usdhc_params_t));
+	params.reg_base = PLAT_PICOPI_BOOT_MMC_BASE;
+	params.clk_rate = 25000000;
+	params.bus_width = MMC_BUS_WIDTH_8;
+	info.mmc_dev_type = MMC_IS_EMMC;
+	imx_usdhc_init(&params, &info);
+}
+
+static void picopi_setup_usb_clocks(void)
+{
+	uint32_t usb_en_bits = (uint32_t)USB_CLK_SELECT;
+
+	imx_clock_set_usb_clk_root_bits(usb_en_bits);
+	imx_clock_enable_usb(CCM_CCGR_ID_USB_IPG);
+	imx_clock_enable_usb(CCM_CCGR_ID_USB_PHY_480MCLK);
+	imx_clock_enable_usb(CCM_CCGR_ID_USB_OTG1_PHY);
+	imx_clock_enable_usb(CCM_CCGR_ID_USB_OTG2_PHY);
+}
+
+void imx7_platform_setup(u_register_t arg1, u_register_t arg2,
+			 u_register_t arg3, u_register_t arg4)
+{
+	uint32_t uart5_en_bits = (uint32_t)UART5_CLK_SELECT;
+	uint32_t usdhc_clock_sel = PLAT_PICOPI_SD - 1;
+
+	/* Initialize clocks etc */
+	imx_clock_enable_uart(4, uart5_en_bits);
+	imx_clock_enable_usdhc(usdhc_clock_sel, USDHC_CLK_SELECT);
+
+	picopi_setup_usb_clocks();
+
+	/* Setup pin-muxes */
+	picopi_setup_pinmux();
+
+	picopi_usdhc_setup();
+}