diff options
| author | Billy Tsai <billy_tsai@aspeedtech.com> | 2025-11-03 13:52:17 +0300 |
|---|---|---|
| committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2025-11-09 18:02:57 +0300 |
| commit | 9d8b88ffb773470ea3a324b67e77e64c0fa8400d (patch) | |
| tree | bed79739bf76c3acba954c0f2e0f3ec2af21da4d | |
| parent | 436cd7712598e9ca07c76f14d1531a1f6c3c502f (diff) | |
| download | linux-9d8b88ffb773470ea3a324b67e77e64c0fa8400d.tar.xz | |
iio: adc: aspeed: Add AST2700 ADC support
This patch adds support for the ADCs found on the Aspeed AST2700 SoC,
which includes two instances: "ast2700-adc0" and "ast2700-adc1". While
they are functionally similar to those on AST2600, the OTP trimming data
is located at the same offset (0x820), but uses different bitfields.
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
| -rw-r--r-- | drivers/iio/adc/aspeed_adc.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c index 1d5fd5f534b8..bf2bfd6bdc41 100644 --- a/drivers/iio/adc/aspeed_adc.c +++ b/drivers/iio/adc/aspeed_adc.c @@ -645,6 +645,16 @@ static const struct aspeed_adc_trim_locate ast2600_adc1_trim = { .field = GENMASK(7, 4), }; +static const struct aspeed_adc_trim_locate ast2700_adc0_trim = { + .offset = 0x820, + .field = GENMASK(3, 0), +}; + +static const struct aspeed_adc_trim_locate ast2700_adc1_trim = { + .offset = 0x820, + .field = GENMASK(7, 4), +}; + static const struct aspeed_adc_model_data ast2400_model_data = { .model_name = "ast2400-adc", .vref_fixed_mv = 2500, @@ -689,11 +699,35 @@ static const struct aspeed_adc_model_data ast2600_adc1_model_data = { .trim_locate = &ast2600_adc1_trim, }; +static const struct aspeed_adc_model_data ast2700_adc0_model_data = { + .model_name = "ast2700-adc0", + .min_sampling_rate = 10000, + .max_sampling_rate = 500000, + .wait_init_sequence = true, + .bat_sense_sup = true, + .scaler_bit_width = 16, + .num_channels = 8, + .trim_locate = &ast2700_adc0_trim, +}; + +static const struct aspeed_adc_model_data ast2700_adc1_model_data = { + .model_name = "ast2700-adc1", + .min_sampling_rate = 10000, + .max_sampling_rate = 500000, + .wait_init_sequence = true, + .bat_sense_sup = true, + .scaler_bit_width = 16, + .num_channels = 8, + .trim_locate = &ast2700_adc1_trim, +}; + static const struct of_device_id aspeed_adc_matches[] = { { .compatible = "aspeed,ast2400-adc", .data = &ast2400_model_data }, { .compatible = "aspeed,ast2500-adc", .data = &ast2500_model_data }, { .compatible = "aspeed,ast2600-adc0", .data = &ast2600_adc0_model_data }, { .compatible = "aspeed,ast2600-adc1", .data = &ast2600_adc1_model_data }, + { .compatible = "aspeed,ast2700-adc0", .data = &ast2700_adc0_model_data }, + { .compatible = "aspeed,ast2700-adc1", .data = &ast2700_adc1_model_data }, { } }; MODULE_DEVICE_TABLE(of, aspeed_adc_matches); |