Hi Paul,
On 23/12/15 20:56, Mark Brown wrote:
On Wed, Dec 23, 2015 at 11:58:37AM +0100, Paul Kocialkowski wrote:
+ gpio = lp->pdata->enable_gpio;
+ if (!gpio_is_valid(gpio))
+ return 0;
+
+ /* Always set enable GPIO high. */
+ ret = devm_gpio_request_one(lp->dev, gpio, GPIOF_OUT_INIT_HIGH, "LP872X
EN");
+ if (ret) {
+ dev_err(lp->dev, "gpio request err: %d\n", ret);
+ return ret;
+ }
This isn't really adding support for the enable GPIO as the changelog
suggests, it's requesting but not managing the GPIO. Since there is
core support for manging enable GPIOs this seems especially silly,
please tell the core about the GPIO and then it will work at runtime
too.
With reference to my previous mail, external GPIOs for LDO3 and BUCK2 in
LP8725 can be specified through regulator_config.ena_gpio. BUCK2 only
can be controlled by external pin when CONFIG pin is grounded.
Please see the description at page 5 of the datasheet.
http://www.ti.com/lit/ds/symlink/lp8725.pdf
Best regards,
Milo
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