[U-Boot] [[PATCH v3 2/2] gpio: omap5-uevm: Configure the tca6424 gpio expander

Nishanth Menon
2013-07-10T23:56:15Z

On 07/10/2013 03:06 PM, Dan Murphy wrote:
> Configure the tca6424 gpio expander
> This allows use of the debug and tri color LEDs.
>
> Signed-off-by: Dan Murphy <dmurphy@ti.com>
> ---
> board/ti/omap5_uevm/evm.c | 21 +++++++++++++++++++++
> board/ti/omap5_uevm/mux_data.h | 2 ++
> include/configs/omap5_uevm.h | 5 +++++
> 3 files changed, 28 insertions(+)
>
> diff --git a/board/ti/omap5_uevm/evm.c b/board/ti/omap5_uevm/evm.c
> index 90046e8..0e9a559 100644
> --- a/board/ti/omap5_uevm/evm.c
> +++ b/board/ti/omap5_uevm/evm.c
> @@ -26,6 +26,7 @@
> #include <palmas.h>
> #include <asm/arch/sys_proto.h>
> #include <asm/arch/mmc_host_def.h>
> +#include <tca642x.h>
>
> #include "mux_data.h"
>
> @@ -35,6 +36,24 @@ const struct omap_sysinfo sysinfo = {
> "Board: OMAP5430 EVM\n"
> };
>
> +/* @brief tca642x_init - Initial states for the GPIO expander
documentation style?
/*
* @brief
?
> + * input reg, output reg, polarity reg, configuration reg
> + */
> +struct tca642x_bank_info tca642x_init[] = {
> + { .input_reg = 0x00,
> + .output_reg = 0x04,
> + .polarity_reg = 0x00,
> + .configuration_reg = 0x80 },
> + { .input_reg = 0x00,
> + .output_reg = 0x00,
> + .polarity_reg = 0x00,
> + .configuration_reg = 0xff },
> + { .input_reg = 0x00,
> + .output_reg = 0x00,
> + .polarity_reg = 0x00,
> + .configuration_reg = 0x40 },
> +};
> +
> /**
> * @brief board_init
> *
> @@ -46,6 +65,8 @@ int board_init(void)
> gd->bd->bi_arch_number = MACH_TYPE_OMAP5_SEVM;
> gd->bd->bi_boot_params = (0x80000000 + 0x100); /* boot param addr */
>
> + tca642x_set_inital_state(CONFIG_SYS_I2C_TCA642X_ADDR, tca642x_init);
> +
> return 0;
> }
>
> diff --git a/board/ti/omap5_uevm/mux_data.h b/board/ti/omap5_uevm/mux_data.h
> index a82795d..7e6415e 100644
> --- a/board/ti/omap5_uevm/mux_data.h
> +++ b/board/ti/omap5_uevm/mux_data.h
> @@ -56,6 +56,8 @@ const struct pad_conf_entry core_padconf_array_essential[] = {
> {USBD0_HS_DP, (IEN | M0)}, /* USBD0_HS_DP */
> {USBD0_HS_DM, (IEN | M0)}, /* USBD0_HS_DM */
> {USBD0_SS_RX, (IEN | M0)}, /* USBD0_SS_RX */
> + {I2C5_SCL, (IEN | M0)}, /* I2C5_SCL */
nit pick -> SCL (or i2c clk) is out put from master - always. IEN
enables full duplex, but anyways.. just a nitpick :)

> + {I2C5_SDA, (IEN | M0)}, /* I2C5_SDA */
>
> };
>
> diff --git a/include/configs/omap5_uevm.h b/include/configs/omap5_uevm.h
> index 46dacc2..bee1278 100644
> --- a/include/configs/omap5_uevm.h
> +++ b/include/configs/omap5_uevm.h
> @@ -53,6 +53,11 @@
> #define CONFIG_PARTITION_UUIDS
> #define CONFIG_CMD_PART
>
> +#define CONFIG_TCA642X
> +#define CONFIG_CMD_TCA642X
> +#define CONFIG_SYS_I2C_TCA642X_BUS_NUM 4
> +#define CONFIG_SYS_I2C_TCA642X_ADDR 0x22
> +
> #define CONFIG_SYS_PROMPT "OMAP5432 uEVM # "
>
> #define CONSOLEDEV "ttyO2"
>

Else,
no further comments from me.
--
Regards,
Nishanth Menon