Thread (3 messages) 3 messages, 2 authors, 2010-08-31
STALE5760d

[PATCH v1] davinci: Initial support for MityDSP-L138/MityARM-1808

From: Nori, Sekhar <hidden>
Date: 2010-08-31 15:39:20

Hi Michael,

On Tue, Aug 31, 2010 at 06:25:25, Michael Williamson wrote:
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 <redacted>
[...]
quoted hunk ↗ jump to hunk
diff --git a/arch/arm/mach-davinci/board-da830-evm.c b/arch/arm/mach-davinci/board-da830-evm.c
index 292e8b7..e51a80f 100644
--- a/arch/arm/mach-davinci/board-da830-evm.c
+++ b/arch/arm/mach-davinci/board-da830-evm.c
@@ -586,6 +586,9 @@ static __init void da830_evm_init(void)
 #ifdef CONFIG_SERIAL_8250_CONSOLE
 static int __init da830_evm_console_init(void)
 {
+     if (!machine_is_davinci_da830_evm())
+             return 0;
+
      return add_preferred_console("ttyS", 2, "115200");
 }
 console_initcall(da830_evm_console_init);
diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c
index 190ebd3..d491b5f 100644
--- a/arch/arm/mach-davinci/board-da850-evm.c
+++ b/arch/arm/mach-davinci/board-da850-evm.c
@@ -847,6 +847,9 @@ static __init void da850_evm_init(void)
 #ifdef CONFIG_SERIAL_8250_CONSOLE
 static int __init da850_evm_console_init(void)
 {
+     if (!machine_is_davinci_da850_evm())
+             return 0;
+
      return add_preferred_console("ttyS", 2, "115200");
 }
 console_initcall(da850_evm_console_init);
I think this should be carved into a separate patch as
this is a bug fix of existing code rather than addition
of new board as subject and description of this patch
indicate.
quoted hunk ↗ jump to hunk
diff --git a/arch/arm/mach-davinci/board-mityomapl138.c b/arch/arm/mach-davinci/board-mityomapl138.c
new file mode 100644
index 0000000..7338adb
--- /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_info("setting phy_mask to %x\n", soc_info->emac_pdata->phy_mask);
This should be pr_debug()?

Thanks,
Sekhar
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