Re: [PATCH v3 14/15] charger: max14577: Configure battery-dependent settings from DTS

From: Jenny Tc
Date: Thu Feb 20 2014 - 01:31:10 EST


On Mon, Feb 17, 2014 at 10:05:49AM +0100, Krzysztof Kozlowski wrote:
> +static inline int max14577_init_eoc(struct max14577_charger *chg,
> + unsigned int uamp)
> +{
> + unsigned int current_bits = 0xf;
> + u8 reg_data;
> +
> + switch (chg->maxim_core->dev_type) {
> + case MAXIM_DEVICE_TYPE_MAX77836:
> + if (uamp < 5000)
> + return -EINVAL; /* Requested current is too low */
> +
> + if (uamp == 7500)
> + current_bits = 0x0;

if (uamp <= 7500) ?

> + /* Initialize Overvoltage-Protection Threshold */
> + switch (chg->pdata->ovp_uvolt) {
> + case 7500000:
> + reg_data = 0x0;
> + break;
> + case 6000000:
> + case 6500000:
> + case 7000000:
> + reg_data = 0x1 + (chg->pdata->ovp_uvolt - 6000000) / 500000;
> + break;

Is it battery OVP or charger source OVP? If it's battery OVP, then minimum
level as 6V seems to be unsafe even for 4.4V batteries.
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