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| | |} | | |} |
| − |
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| − | === Linux kernel patches ===
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| − |
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| − | {{ImportantMessage|text=The patches below applies to DIVELK 1.0.0 Linux source tree.}}
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| − |
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| − | The files <code>arch/arm/mach-omap2/board-diva.c</code> and <code>arch/arm/mach-omap2/diva_pinmux_table.h</code> must be modified according to the following patches:
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| − |
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| − | <diff>
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| − | diff --git a/arch/arm/mach-omap2/board-diva.c b/arch/arm/mach-omap2/board-diva.c
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| − | index 42898e9..282917d 100644
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| − | --- a/arch/arm/mach-omap2/board-diva.c
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| − | +++ b/arch/arm/mach-omap2/board-diva.c
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| − | @@ -734,6 +734,14 @@ static void __init diva_i2c_init(void)
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| − | ARRAY_SIZE(am335x_i2c0_boardinfo));
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| − | }
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| − |
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| − | +/* ------------ I2C2 BUS -------------------------------------------------*/
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| − | +
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| − | +static void i2c2_init(int evm_id, int profile)
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| − | +{
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| − | + setup_pin_mux(i2c2_pin_mux);
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| − | + omap_register_i2c_bus(3, 100, NULL, 0);
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| − | +}
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| − | +
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| − |
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| − | /* ------------ USB BUS -------------------------------------------------*/
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| − | static struct omap_musb_board_data musb_board_data = {
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| − | @@ -880,6 +888,8 @@ static struct evm_dev_cfg diva_dev_cfg[] = {
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| − |
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| − | {w1_init, DEV_ON_BASEBOARD, PROFILE_NONE},
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| − |
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| − | + {i2c2_init, DEV_ON_BASEBOARD, PROFILE_NONE},
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| − | +
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| − | /* {enable_ecap2, DEV_ON_BASEBOARD, PROFILE_NONE},*/
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| − | /* {mmc1_wl12xx_init, DEV_ON_BASEBOARD, PROFILE_NONE},*/
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| − | /* {uart1_wl12xx_init, DEV_ON_BASEBOARD, PROFILE_NONE},*/
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| − | </diff>
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| − |
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| − | <diff>
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| − | diff --git a/arch/arm/mach-omap2/diva_pinmux_table.h b/arch/arm/mach-omap2/diva_pinmux_table.h
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| − | index f6647b0..8d88a27 100644
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| − | --- a/arch/arm/mach-omap2/diva_pinmux_table.h
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| − | +++ b/arch/arm/mach-omap2/diva_pinmux_table.h
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| − | @@ -179,6 +179,14 @@ static struct pinmux_config w1_gpio_pin_mux[] = {
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| − | {NULL, 0},
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| − | };
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| − |
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| − | +static struct pinmux_config i2c2_pin_mux[] = {
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| − | + {"uart1_ctsn.i2c2_sda", OMAP_MUX_MODE3 | AM33XX_SLEWCTRL_SLOW |
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| − | + AM33XX_PULL_UP | AM33XX_INPUT_EN},
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| − | + {"uart1_rtsn.i2c2_scl", OMAP_MUX_MODE3 | AM33XX_SLEWCTRL_SLOW |
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| − | + AM33XX_PULL_UP | AM33XX_INPUT_EN},
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| − | + {NULL, 0},
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| − | +};
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| − | +
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| − | /*
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| − | * the following mux configurations are un-tested but are left here for
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| − | * reference. They are all comment-out to avoid "defined but not used" warning
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| − | @@ -265,14 +273,6 @@ static struct pinmux_config i2c1_pin_mux[] = {
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| − | {NULL, 0},
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| − | };
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| − |
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| − | -static struct pinmux_config i2c2_pin_mux[] = {
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| − | - {"uart1_ctsn.i2c2_sda", OMAP_MUX_MODE3 | AM33XX_SLEWCTRL_SLOW |
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| − | - AM33XX_PULL_UP | AM33XX_INPUT_EN},
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| − | - {"uart1_rtsn.i2c2_scl", OMAP_MUX_MODE3 | AM33XX_SLEWCTRL_SLOW |
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| − | - AM33XX_PULL_UP | AM33XX_INPUT_EN},
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| − | - {NULL, 0},
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| − | -};
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| − | -
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| − | static struct pinmux_config mmc0_cd_only_pin_mux[] = {
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| − | {"gpmc_csn1.gpio1_30", OMAP_MUX_MODE7 | AM33XX_PIN_INPUT_PULLUP},
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| − | {NULL, 0},
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| − | </diff>
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| − |
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| − | The kernel must be rebuilt to make these modifications effective.
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| − |
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| − | === Using the interface ===
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| − |
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| − | Users can access the peripherals connected to the I2C2 bus through the I2C-dev framework. For further information, please refer to
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| − |
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| − | * https://www.kernel.org/doc/Documentation/i2c/dev-interface
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| − | * http://www.lm-sensors.org/wiki/I2CTools
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| − | * http://elinux.org/Interfacing_with_I2C_Devices
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| − |
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| − | === Patch download ===
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| − |
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| − | [[File:Divelk-i2c2-enable.patch.zip]]
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