Hi,
The question is summarized as below.
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First of all, Intel does not support customer to configure TPS68470 registers as they want, so customer can only consider HW change to fit their need.
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Intel would not enable both ILEDA and ILEDB simultaneously.
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ILEDA current is fixed at 16mA based on our chip design.
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ILEDB current is configured as 2mA when it’s enabled based on Intel’s SW driver.
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As the schematics below, customer's purpose is to keep the LED current as 2mA when ILEDA is enabled in TPS68470. Customer considers to add resistor to keep LED current as 2mA. Do you think it’s feasible? How should they choose the value of this resistor? (LED spec is http://www.fairchip.com/pdf/Everlight/19-217-T1D-AP1Q2QY-3T.pdf .)
Antony