[PATCH v2] davinci: Initial support for MityDSP-L138/MityARM-1808
Michael Williamson
michael.williamson at criticallink.com
Tue Aug 31 14:56:55 EDT 2010
This patch adds initial support for the MityDSP-L138 and MityDSP-1808 system
on Module (SOM) under the machine name "mityomapl138". These SOMs are based
on the da850 davinci CPU architecture. Information on these SOMs may be
found at http://www.mitydsp.com.
Basic support for the console UART, NAND, and EMAC (MII interface) is
included in this patch.
Signed-off-by: Michael Williamson <michael.williamson at criticallink.com>
---
Changes since v1:
1) Split out defconfig changes to separate patch.
2) Split out console init changes to DA8XX EVMS to separate patch.
3) Change a pr_info() to a pr_debug().
arch/arm/mach-davinci/Kconfig | 9 +
arch/arm/mach-davinci/Makefile | 1 +
arch/arm/mach-davinci/board-mityomapl138.c | 220 +++++++++++++++++++++++
arch/arm/mach-davinci/include/mach/uncompress.h | 1 +
4 files changed, 231 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-davinci/board-mityomapl138.c
diff --git a/arch/arm/mach-davinci/Kconfig b/arch/arm/mach-davinci/Kconfig
index 2bf03e9..633eccb 100644
--- a/arch/arm/mach-davinci/Kconfig
+++ b/arch/arm/mach-davinci/Kconfig
@@ -185,6 +185,15 @@ config MACH_TNETV107X
help
Say Y here to select the TI TNETV107X Evaluation Module.
+config MACH_MITYOMAPL138
+ bool "Critical Link MityDSP-L138/MityARM-1808 SoM"
+ default ARCH_DAVINCI_DA850
+ depends on ARCH_DAVINCI_DA850
+ help
+ Say Y here to select the Critical Link MityDSP-L138/MityARM-1808
+ System on Module. Information on this SoM may be found at
+ http://www.mitydsp.com
+
config DAVINCI_MUX
bool "DAVINCI multiplexing support"
depends on ARCH_DAVINCI
diff --git a/arch/arm/mach-davinci/Makefile b/arch/arm/mach-davinci/Makefile
index eab4c0f..3e966e8 100644
--- a/arch/arm/mach-davinci/Makefile
+++ b/arch/arm/mach-davinci/Makefile
@@ -33,6 +33,7 @@ obj-$(CONFIG_MACH_DAVINCI_DM365_EVM) += board-dm365-evm.o
obj-$(CONFIG_MACH_DAVINCI_DA830_EVM) += board-da830-evm.o
obj-$(CONFIG_MACH_DAVINCI_DA850_EVM) += board-da850-evm.o
obj-$(CONFIG_MACH_TNETV107X) += board-tnetv107x-evm.o
+obj-$(CONFIG_MACH_MITYOMAPL138) += board-mityomapl138.o
# Power Management
obj-$(CONFIG_CPU_FREQ) += cpufreq.o
diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c
new file mode 100644
index 0000000..f95cd9c
--- /dev/null
+++ b/arch/arm/mach-davinci/board-mityomapl138.c
@@ -0,0 +1,220 @@
+/*
+ * Critical Link MityOMAP-L138 SoM
+ *
+ * Copyright (C) 2010 Critical Link LLC - http://www.criticallink.com
+ *
+ * This file is licensed under the terms of the GNU General Public License
+ * version 2. This program is licensed "as is" without any warranty of
+ * any kind, whether express or implied.
+ */
+
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/console.h>
+#include <linux/platform_device.h>
+#include <linux/mtd/partitions.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <mach/common.h>
+#include <mach/cp_intc.h>
+#include <mach/da8xx.h>
+#include <mach/nand.h>
+#include <mach/mux.h>
+
+#define MITYOMAPL138_PHY_MASK 0x08 /* hardcoded for now */
+#define MITYOMAPL138_MDIO_FREQUENCY (2200000) /* PHY bus frequency */
+
+/*
+ * MityDSP-L138 includes a 256 MByte large-page NAND flash
+ * (128K blocks).
+ */
+struct mtd_partition mityomapl138_nandflash_partition[] = {
+ {
+ .name = "rootfs",
+ .offset = 0,
+ .size = SZ_128M,
+ .mask_flags = 0, /* MTD_WRITEABLE, */
+ },
+ {
+ .name = "homefs",
+ .offset = MTDPART_OFS_APPEND,
+ .size = MTDPART_SIZ_FULL,
+ .mask_flags = 0,
+ },
+};
+
+static struct davinci_nand_pdata mityomapl138_nandflash_data = {
+ .parts = mityomapl138_nandflash_partition,
+ .nr_parts = ARRAY_SIZE(mityomapl138_nandflash_partition),
+ .ecc_mode = NAND_ECC_HW,
+ .options = NAND_USE_FLASH_BBT | NAND_BUSWIDTH_16,
+ .ecc_bits = 1, /* 4 bit mode is not supported with 16 bit NAND */
+};
+
+static struct resource mityomapl138_nandflash_resource[] = {
+ {
+ .start = DA8XX_AEMIF_CS3_BASE,
+ .end = DA8XX_AEMIF_CS3_BASE + SZ_512K + 2 * SZ_1K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = DA8XX_AEMIF_CTL_BASE,
+ .end = DA8XX_AEMIF_CTL_BASE + SZ_32K - 1,
+ .flags = IORESOURCE_MEM,
+ },
+};
+
+static struct platform_device mityomapl138_nandflash_device = {
+ .name = "davinci_nand",
+ .id = 0,
+ .dev = {
+ .platform_data = &mityomapl138_nandflash_data,
+ },
+ .num_resources = ARRAY_SIZE(mityomapl138_nandflash_resource),
+ .resource = mityomapl138_nandflash_resource,
+};
+
+static struct platform_device *mityomapl138_devices[] __initdata = {
+ &mityomapl138_nandflash_device,
+};
+
+static void __init mityomapl138_setup_nand(void)
+{
+ platform_add_devices(mityomapl138_devices,
+ ARRAY_SIZE(mityomapl138_devices));
+}
+
+static struct davinci_uart_config mityomapl138_uart_config __initdata = {
+ .enabled_uarts = 0x7,
+};
+
+static const short mityomap_mii_pins[] = {
+ DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
+ DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
+ DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
+ DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
+ DA850_MDIO_D,
+ -1
+};
+
+static const short mityomap_rmii_pins[] = {
+ DA850_RMII_TXD_0, DA850_RMII_TXD_1, DA850_RMII_TXEN,
+ DA850_RMII_CRS_DV, DA850_RMII_RXD_0, DA850_RMII_RXD_1,
+ DA850_RMII_RXER, DA850_RMII_MHZ_50_CLK, DA850_MDIO_CLK,
+ DA850_MDIO_D,
+ -1
+};
+
+static void __init mityomapl138_config_emac(void)
+{
+ void __iomem *cfg_chip3_base;
+ int ret;
+ u32 val;
+ struct davinci_soc_info *soc_info = &davinci_soc_info;
+ soc_info->emac_pdata->rmii_en = 0; /* hardcoded for now */
+
+ cfg_chip3_base = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
+ val = __raw_readl(cfg_chip3_base);
+
+ if (soc_info->emac_pdata->rmii_en) {
+ val |= BIT(8);
+ ret = davinci_cfg_reg_list(mityomap_rmii_pins);
+ pr_info("RMII PHY configured\n");
+ } else {
+ val &= ~BIT(8);
+ ret = davinci_cfg_reg_list(mityomap_mii_pins);
+ pr_info("MII PHY configured\n");
+ }
+
+ if (ret) {
+ pr_warning("mii/rmii mux setup failed: %d\n", ret);
+ return;
+ }
+
+ /* configure the CFGCHIP3 register for RMII or MII */
+ __raw_writel(val, cfg_chip3_base);
+
+ soc_info->emac_pdata->phy_mask = MITYOMAPL138_PHY_MASK;
+ pr_debug("setting phy_mask to %x\n", soc_info->emac_pdata->phy_mask);
+ soc_info->emac_pdata->mdio_max_freq = MITYOMAPL138_MDIO_FREQUENCY;
+
+ ret = da8xx_register_emac();
+ if (ret)
+ pr_warning("emac registration failed: %d\n", ret);
+}
+
+static struct davinci_pm_config da850_pm_pdata = {
+ .sleepcount = 128,
+};
+
+static struct platform_device da850_pm_device = {
+ .name = "pm-davinci",
+ .dev = {
+ .platform_data = &da850_pm_pdata,
+ },
+ .id = -1,
+};
+
+static void __init mityomapl138_init(void)
+{
+ int ret;
+
+ /* for now, no special EDMA channels are reserved */
+ ret = da850_register_edma(NULL);
+ if (ret)
+ pr_warning("edma registration failed: %d\n", ret);
+
+ ret = da8xx_register_watchdog();
+ if (ret)
+ pr_warning("watchdog registration failed: %d\n", ret);
+
+ davinci_serial_init(&mityomapl138_uart_config);
+
+ mityomapl138_setup_nand();
+
+ mityomapl138_config_emac();
+
+ ret = da8xx_register_rtc();
+ if (ret)
+ pr_warning("rtc setup failed: %d\n", ret);
+
+ ret = da850_register_cpufreq("pll0_sysclk3");
+ if (ret)
+ pr_warning("cpufreq registration failed: %d\n", ret);
+
+ ret = da8xx_register_cpuidle();
+ if (ret)
+ pr_warning("cpuidle registration failed: %d\n", ret);
+
+ ret = da850_register_pm(&da850_pm_device);
+ if (ret)
+ pr_warning("da850_evm_init: suspend registration failed: %d\n",
+ ret);
+}
+
+#ifdef CONFIG_SERIAL_8250_CONSOLE
+static int __init mityomapl138_console_init(void)
+{
+ if (!machine_is_mityomapl138())
+ return 0;
+
+ return add_preferred_console("ttyS", 1, "115200");
+}
+console_initcall(mityomapl138_console_init);
+#endif
+
+static void __init mityomapl138_map_io(void)
+{
+ da850_init();
+}
+
+MACHINE_START(MITYOMAPL138, "MityDSP-L138/MityARM-1808")
+ .phys_io = IO_PHYS,
+ .io_pg_offst = (__IO_ADDRESS(IO_PHYS) >> 18) & 0xfffc,
+ .boot_params = (DA8XX_DDR_BASE + 0x100),
+ .map_io = mityomapl138_map_io,
+ .init_irq = cp_intc_init,
+ .timer = &davinci_timer,
+ .init_machine = mityomapl138_init,
+MACHINE_END
diff --git a/arch/arm/mach-davinci/include/mach/uncompress.h b/arch/arm/mach-davinci/include/mach/uncompress.h
index 15a6192..d370391 100644
--- a/arch/arm/mach-davinci/include/mach/uncompress.h
+++ b/arch/arm/mach-davinci/include/mach/uncompress.h
@@ -88,6 +88,7 @@ static inline void __arch_decomp_setup(unsigned long arch_id)
/* DA8xx boards */
DEBUG_LL_DA8XX(davinci_da830_evm, 2);
DEBUG_LL_DA8XX(davinci_da850_evm, 2);
+ DEBUG_LL_DA8XX(mityomapl138, 1);
/* TNETV107x boards */
DEBUG_LL_TNETV107X(tnetv107x, 1);
--
1.7.0.4
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