imx: imx6ul: Add support for Kontron Electronics SL/BL i.MX6UL/ULL boards (N63xx/N64xx)
This adds support for i.MX6UL/ULL-based evaluation kits with SoMs by
Kontron Electronics GmbH.
Currently there are the following SoM flavors (SoM-Line):
* N6310: SOM with i.MX6UL-2, 256MB RAM, 256MB SPI NAND
* N6311: SOM with i.MX6UL-2, 512MB RAM, 512MB SPI NAND
* N6411: SOM with i.MX6ULL, 512MB RAM, 512MB SPI NAND
And the according evaluation boards (Board-Line):
* N6310-S: Baseboard with SOM N6310, eMMC, display (optional), ...
* N6311-S: Baseboard with SOM N6311, eMMC, display (optional), ...
* N6411-S: Baseboard with SOM N6411, eMMC, display (optional), ...
Currently U-Boot describes i.MX6UL and i.MX6ULL through separate config
options at compile-time. Though the differences are so minor, that for
the scope of these SoMs we just use a single defconfig that is compatible
with both SoCs.
Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>
diff --git a/board/kontron/sl-mx6ul/sl-mx6ul.c b/board/kontron/sl-mx6ul/sl-mx6ul.c
new file mode 100644
index 0000000..79d4d87
--- /dev/null
+++ b/board/kontron/sl-mx6ul/sl-mx6ul.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018 Kontron Electronics GmbH
+ */
+
+#include <asm/arch/clock.h>
+#include <asm/arch/sys_proto.h>
+#include <asm/global_data.h>
+#include <fdt_support.h>
+#include <phy.h>
+
+DECLARE_GLOBAL_DATA_PTR;
+
+int dram_init(void)
+{
+ gd->ram_size = imx_ddr_size();
+
+ return 0;
+}
+
+int ft_board_setup(void *blob, struct bd_info *bd)
+{
+ /*
+ * Overwrite the memory size in the devicetree that is
+ * passed to the kernel with the actual size detected.
+ */
+ return fdt_fixup_memory(blob, PHYS_SDRAM, gd->ram_size);
+}
+
+static int setup_fec(void)
+{
+ struct iomuxc *const iomuxc_regs = (struct iomuxc *)IOMUXC_BASE_ADDR;
+ int ret;
+
+ /*
+ * Use 50M anatop loopback REF_CLK1 for ENET1,
+ * clear gpr1[13], set gpr1[17].
+ */
+ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC1_MASK,
+ IOMUX_GPR1_FEC1_CLOCK_MUX1_SEL_MASK);
+
+ /*
+ * Use 50M anatop loopback REF_CLK2 for ENET2,
+ * clear gpr1[14], set gpr1[18].
+ */
+ clrsetbits_le32(&iomuxc_regs->gpr[1], IOMUX_GPR1_FEC2_MASK,
+ IOMUX_GPR1_FEC2_CLOCK_MUX1_SEL_MASK);
+
+ ret = enable_fec_anatop_clock(0, ENET_50MHZ);
+ if (ret)
+ return ret;
+
+ ret = enable_fec_anatop_clock(1, ENET_50MHZ);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+int board_phy_config(struct phy_device *phydev)
+{
+ phy_write(phydev, MDIO_DEVAD_NONE, 0x1f, 0x8190);
+
+ if (phydev->drv->config)
+ phydev->drv->config(phydev);
+
+ return 0;
+}
+
+int board_early_init_f(void)
+{
+ enable_qspi_clk(0);
+
+ return 0;
+}
+
+int board_init(void)
+{
+ /* Address of boot parameters */
+ gd->bd->bi_boot_params = PHYS_SDRAM + 0x100;
+
+ setup_fec();
+
+ return 0;
+}