[U-Boot] [PATCH v2] TI: OMAP3: Overo Tobi ethernet support

Olof Johansson
2009-09-23T18:43:24Z

On Sep 23, 2009, at 1:39 PM, Tom wrote:

> Olof Johansson wrote:
>> Add setup for ethernet on Tobi, allowing kernel/ramdisk to be loaded
>> over tftp.
>> Based on the omap3 evm code. I added a new highlevel define for Tobi
>> to avoid having it dependent on CMD_NET (which would seem backward in
>> this case).
>> Signed-off-by: Olof Johansson <olof@lixom.net>
>> ---
>> This version of the patch fixes whitespace comments from WD, and
>> includes
>> fixes for the build warnings that Dirk's patch also silenced.
>> board/overo/overo.c | 62 +++++++++++++++++++++++++++++++
>> ++++++++++
>> board/overo/overo.h | 37 ++++++++++++++++++++++++
>> include/configs/omap3_overo.h | 23 ++++++++++++++-
>> 3 files changed, 120 insertions(+), 2 deletions(-)
>> diff --git a/board/overo/overo.c b/board/overo/overo.c
>> index dd6d286..7d87e52 100644
>> --- a/board/overo/overo.c
>> +++ b/board/overo/overo.c
>> @@ -29,13 +29,19 @@
>> * MA 02111-1307 USA
>> */
>> #include <common.h>
>> +#include <netdev.h>
>> #include <twl4030.h>
>> #include <asm/io.h>
>> #include <asm/arch/mux.h>
>> +#include <asm/arch/mem.h>
>> #include <asm/arch/sys_proto.h>
>> #include <asm/mach-types.h>
>> #include "overo.h"
>> +#if defined(CONFIG_OMAP3_OVERO_TOBI)
>> +static void setup_net_chip(void);
>> +#endif
>> +
>> /*
>> * Routine: board_init
>> * Description: Early hardware init.
>> @@ -62,6 +68,10 @@ int misc_init_r(void)
>> twl4030_power_init();
>> twl4030_led_init();
>> +#if defined(CONFIG_OMAP3_OVERO_TOBI)
>> + setup_net_chip();
>> +#endif
>> +
>> dieid_num_r();
>> return 0;
>> @@ -76,4 +86,56 @@ int misc_init_r(void)
>> void set_muxconf_regs(void)
>> {
>> MUX_OVERO();
>> +#if defined(CONFIG_OMAP3_OVERO_TOBI)
>> + MUX_OVERO_TOBI();
>> +#endif
>> +}
>> +
>> +#if defined(CONFIG_OMAP3_OVERO_TOBI)
>> +/*
>> + * Routine: setup_net_chip
>> + * Description: Setting up the configuration GPMC registers
>> specific to the
>> + * Ethernet hardware.
>> + */
>> +static void setup_net_chip(void)
>> +{
>> + struct gpio *gpio3_base = (struct gpio *)OMAP34XX_GPIO3_BASE;
>> + struct ctrl *ctrl_base = (struct ctrl *)OMAP34XX_CTRL_BASE;
>> +
>> + /* Configure GPMC registers */
>> + writel(NET_GPMC_CONFIG1, &gpmc_cfg->cs[5].config1);
>> + writel(NET_GPMC_CONFIG2, &gpmc_cfg->cs[5].config2);
>> + writel(NET_GPMC_CONFIG3, &gpmc_cfg->cs[5].config3);
>> + writel(NET_GPMC_CONFIG4, &gpmc_cfg->cs[5].config4);
>> + writel(NET_GPMC_CONFIG5, &gpmc_cfg->cs[5].config5);
>> + writel(NET_GPMC_CONFIG6, &gpmc_cfg->cs[5].config6);
>> + writel(NET_GPMC_CONFIG7, &gpmc_cfg->cs[5].config7);
>> +
>> + /* Enable off mode for NWE in PADCONF_GPMC_NWE register */
>> + writew(readw(&ctrl_base ->gpmc_nwe) | 0x0E00, &ctrl_base-
>> >gpmc_nwe);
>> + /* Enable off mode for NOE in PADCONF_GPMC_NADV_ALE register */
>> + writew(readw(&ctrl_base->gpmc_noe) | 0x0E00, &ctrl_base->gpmc_noe);
>> + /* Enable off mode for ALE in PADCONF_GPMC_NADV_ALE register */
>> + writew(readw(&ctrl_base->gpmc_nadv_ale) | 0x0E00,
>> + &ctrl_base->gpmc_nadv_ale);
>> +
>> + /* Make GPIO 64 as output pin */
>> + writel(readl(&gpio3_base->oe) & ~(GPIO0), &gpio3_base->oe);
>> +
>> + /* Now send a pulse on the GPIO pin */
>> + writel(GPIO0, &gpio3_base->setdataout);
>> + udelay(1);
>> + writel(GPIO0, &gpio3_base->cleardataout);
>> + udelay(1);
>> + writel(GPIO0, &gpio3_base->setdataout);
>
> Use the omap gpio interface described in README.omap3
>

Seriously, this code is a 1:1 replica from the evm code. Obviously
that code was good enough to merge.

-Olof