mx6: Add initial support for the Hummingboard solo

SolidRun has designed the Hummingboard board based on mx6q/dl/solo.

Add the initial support for the mx6 solo variant.

More information about this hardware can be found at:
http://imx.solid-run.com/wiki/index.php?title=Carrier-One_Hardware

(Carrier-One was the previous name of Hummingboard).

Based on the work from Jon Nettleton <jon.nettleton@gmail.com>.

Signed-off-by: Jon Nettleton <jon.nettleton@gmail.com>
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>

1 files changed, 187 insertions, 0 deletions

diff --git a/board/solidrun/hummingboard/hummingboard.c b/board/solidrun/hummingboard/hummingboard.c
new file mode 100644
index 0000000000..8b309b49de
--- /dev/null
+++ b/board/solidrun/hummingboard/hummingboard.c
@@ -0,0 +1,187 @@
+/*
+ * Copyright (C) 2013 Freescale Semiconductor, Inc.
+ * Copyright (C) 2013 SolidRun ltd.
+ * Copyright (C) 2013 Jon Nettleton <jon.nettleton@gmail.com>.
+ *
+ * Authors: Fabio Estevam <fabio.estevam@freescale.com>
+	    Jon Nettleton <jon.nettleton@gmail.com>
+ *
+ * SPDX-License-Identifier:	GPL-2.0+
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/crm_regs.h>
+#include <asm/arch/imx-regs.h>
+#include <asm/arch/iomux.h>
+#include <asm/arch/mx6-pins.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/errno.h>
+#include <asm/gpio.h>
+#include <asm/imx-common/iomux-v3.h>
+#include <asm/io.h>
+#include <mmc.h>
+#include <fsl_esdhc.h>
+#include <miiphy.h>
+#include <netdev.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+#define UART_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm |			\
+	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define USDHC_PAD_CTRL (PAD_CTL_PUS_47K_UP |			\
+	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_80ohm |			\
+	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define USDHC_PAD_CLK_CTRL (PAD_CTL_SPEED_LOW |			\
+	PAD_CTL_DSE_80ohm | PAD_CTL_SRE_FAST |			\
+	PAD_CTL_HYS)
+
+#define USDHC_PAD_GPIO_CTRL (PAD_CTL_PUS_22K_UP |		\
+	PAD_CTL_SPEED_LOW | PAD_CTL_DSE_40ohm |			\
+	PAD_CTL_SRE_FAST  | PAD_CTL_HYS)
+
+#define ENET_PAD_CTRL  (PAD_CTL_PUS_100K_UP |			\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
+
+#define ENET_PAD_CTRL_PD  (PAD_CTL_PUS_100K_DOWN |		\
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_HYS)
+
+#define ENET_PAD_CTRL_CLK  ((PAD_CTL_PUS_100K_UP & ~PAD_CTL_PKE) | \
+	PAD_CTL_SPEED_MED | PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST)
+
+#define ETH_PHY_RESET	IMX_GPIO_NR(4, 15)
+
+int dram_init(void)
+{
+	gd->ram_size = ((phys_size_t)CONFIG_DDR_MB * 1024 * 1024);
+
+	return 0;
+}
+
+static iomux_v3_cfg_t const uart1_pads[] = {
+	MX6_PAD_CSI0_DAT10__UART1_TX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+	MX6_PAD_CSI0_DAT11__UART1_RX_DATA | MUX_PAD_CTRL(UART_PAD_CTRL),
+};
+
+static void setup_iomux_uart(void)
+{
+	imx_iomux_v3_setup_multiple_pads(uart1_pads, ARRAY_SIZE(uart1_pads));
+}
+
+static iomux_v3_cfg_t const usdhc2_pads[] = {
+	MX6_PAD_SD2_CLK__SD2_CLK | MUX_PAD_CTRL(USDHC_PAD_CLK_CTRL),
+	MX6_PAD_SD2_CMD__SD2_CMD | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT0__SD2_DATA0 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT1__SD2_DATA1 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT2__SD2_DATA2 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_SD2_DAT3__SD2_DATA3 | MUX_PAD_CTRL(USDHC_PAD_CTRL),
+	MX6_PAD_GPIO_4__SD2_CD_B | MUX_PAD_CTRL(USDHC_PAD_GPIO_CTRL),
+};
+
+#ifdef CONFIG_FSL_ESDHC
+static struct fsl_esdhc_cfg usdhc_cfg[1] = {
+	{ USDHC2_BASE_ADDR },
+};
+
+int board_mmc_getcd(struct mmc *mmc)
+{
+	return 1; /* SD card is the boot medium, so always present */
+}
+
+int board_mmc_init(bd_t *bis)
+{
+	imx_iomux_v3_setup_multiple_pads(usdhc2_pads, ARRAY_SIZE(usdhc2_pads));
+	usdhc_cfg[0].sdhc_clk = mxc_get_clock(MXC_ESDHC2_CLK);
+
+	return fsl_esdhc_initialize(bis, &usdhc_cfg[0]);
+}
+#endif
+
+#ifdef CONFIG_FEC_MXC
+static iomux_v3_cfg_t const enet_pads[] = {
+	MX6_PAD_ENET_MDIO__ENET_MDIO | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_ENET_MDC__ENET_MDC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	/* AR8035 reset */
+	MX6_PAD_KEY_ROW4__GPIO4_IO15 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	/* AR8035 interrupt */
+	MX6_PAD_DI0_PIN2__GPIO4_IO18 | MUX_PAD_CTRL(NO_PAD_CTRL),
+	/* GPIO16 -> AR8035 25MHz */
+	MX6_PAD_GPIO_16__ENET_REF_CLK	  | MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_RGMII_TXC__RGMII_TXC	  | MUX_PAD_CTRL(NO_PAD_CTRL),
+	MX6_PAD_RGMII_TD0__RGMII_TD0 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD1__RGMII_TD1 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD2__RGMII_TD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TD3__RGMII_TD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_TX_CTL__RGMII_TX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	/* AR8035 CLK_25M --> ENET_REF_CLK (V22) */
+	MX6_PAD_ENET_REF_CLK__ENET_TX_CLK | MUX_PAD_CTRL(ENET_PAD_CTRL_CLK),
+	MX6_PAD_RGMII_RXC__RGMII_RXC | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD0__RGMII_RD0 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_RGMII_RD1__RGMII_RD1 | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+	MX6_PAD_RGMII_RD2__RGMII_RD2 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RD3__RGMII_RD3 | MUX_PAD_CTRL(ENET_PAD_CTRL),
+	MX6_PAD_RGMII_RX_CTL__RGMII_RX_CTL | MUX_PAD_CTRL(ENET_PAD_CTRL_PD),
+};
+
+static void setup_iomux_enet(void)
+{
+	imx_iomux_v3_setup_multiple_pads(enet_pads, ARRAY_SIZE(enet_pads));
+
+	gpio_direction_output(ETH_PHY_RESET, 0);
+	mdelay(2);
+	gpio_set_value(ETH_PHY_RESET, 1);
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+	if (phydev->drv->config)
+		phydev->drv->config(phydev);
+
+	return 0;
+}
+
+int board_eth_init(bd_t *bis)
+{
+	struct iomuxc_base_regs *const iomuxc_regs =
+			(struct iomuxc_base_regs *)IOMUXC_BASE_ADDR;
+
+	int ret = enable_fec_anatop_clock(ENET_25MHz);
+	if (ret)
+		return ret;
+
+	/* set gpr1[ENET_CLK_SEL] */
+	setbits_le32(&iomuxc_regs->gpr[1], IOMUXC_GPR1_ENET_CLK_SEL_MASK);
+
+	setup_iomux_enet();
+
+	ret = cpu_eth_init(bis);
+	if (ret)
+		printf("FEC MXC: %s:failed\n", __func__);
+
+	return ret;
+}
+#endif
+
+int board_early_init_f(void)
+{
+	setup_iomux_uart();
+
+	return 0;
+}
+
+int board_init(void)
+{
+	/* address of boot parameters */
+	gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+	return 0;
+}
+
+int checkboard(void)
+{
+	puts("Board: Hummingboard\n");
+
+	return 0;
+}