s-paul...@ti.com wrote:
> From: Sandeep Paulraj <s-paul...@ti.com>
>
> This patch enables EMAC on the DM365 EVM.
>
> Signed-off-by: Sandeep Paulraj <s-paul...@ti.com>
> ---
> Changes since v1 include using a memory map to manipulate GPIO registers.
> This was suggested by Wolfgang.
> When compiling with this patch DM365 will still give compilation issues as i
> have
> to send an update to the EMAC driver for DM365. Patch to follow.
> board/davinci/dm365evm/dm365evm.c | 43
> +++++++++++++++++++++++++++++++++++++
> 1 files changed, 43 insertions(+), 0 deletions(-)
>
> diff --git a/board/davinci/dm365evm/dm365evm.c
> b/board/davinci/dm365evm/dm365evm.c
> index 99392b3..efd4713 100644
> --- a/board/davinci/dm365evm/dm365evm.c
> +++ b/board/davinci/dm365evm/dm365evm.c
> @@ -17,9 +17,12 @@
>
> #include <common.h>
> #include <nand.h>
> +#include <asm/io.h>
> #include <asm/arch/hardware.h>
> #include <asm/arch/emif_defs.h>
> #include <asm/arch/nand_defs.h>
> +#include <asm/arch/gpio_defs.h>
> +#include <netdev.h>
> #include "../common/misc.h"
>
> DECLARE_GLOBAL_DATA_PTR;
> @@ -32,6 +35,46 @@ int board_init(void)
> return 0;
> }
>
> +#ifdef CONFIG_DRIVER_TI_EMAC
> +int board_eth_init(bd_t *bis)
> +{
> + uint8_t eeprom_enetaddr[6];
> + int i;
> + struct davinci_gpio *gpio1_base =
> + (struct davinci_gpio *)DAVINCI_GPIO_BANK01;
> +
> + /* Configure PINMUX 3 to enable EMAC pins */
> + writel((readl(PINMUX3) | 0x1affff), PINMUX3);
> +
> + /* Configure GPIO20 as output */
> + writel((readl(&gpio1_base->dir) & 0xffefffff), &gpio1_base->dir);
> +
> + /* Toggle GPIO 20 */
> + for (i = 0; i < 20; i++) {
> + /* GPIO 20 low */
> + writel((readl(&gpio1_base->out_data) & 0xffefffff),
> + &gpio1_base->out_data);
> +
> + udelay(1000);
> +
> + /* GPIO 20 high */
> + writel((readl(&gpio1_base->out_data) | 0x00100000),
> + &gpio1_base->out_data);
> + }
You may want to convert the constants from
0xffeffff -> ~(1 << 20)
0x0010000 -> (1 << 20)
or bit = 20; (1 << bit)
Up to you.
Fine otherwise.
Tom
> +
> + /* Configure I2C pins so that EEPROM can be read */
> + writel((readl(PINMUX3) | 0x01400000), PINMUX3);
> +
> + /* Read Ethernet MAC address from EEPROM */
> + if (dvevm_read_mac_address(eeprom_enetaddr))
> + dv_configure_mac_address(eeprom_enetaddr);
> +
> + davinci_emac_initialize();
> +
> + return 0;
> +}
> +#endif
> +
> #ifdef CONFIG_NAND_DAVINCI
> static void nand_dm365evm_select_chip(struct mtd_info *mtd, int chip)
> {
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