omap_vc_config_channel(9)

💅 omap_vc_config_channel — kernel API manual, but make it make sense

okay bestie, so this page is from the Kernel API Manual and it's all about omap_vc_config_channel(9) — say that three times fast, I dare you 🫶

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✨ NAME ✨

omap_vc_config_channel — configure the VC channel to PMIC mappings, periodt

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🌸 SYNOPSIS 🌸

int omap_vc_config_channel (struct voltagedomain *voltdm );

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🎀 ARGUMENTS 🎀

• voltdm — a pointer to the voltagdomain that defines the VC channel you actually want. that's it, that's the whole argument, she's lowkey simple 💅

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🦋 DESCRIPTION 🦋

So this function configures the VC channel → PMIC mappings for the following PMIC settings, and yes we're listing them all because details are the moment:

• i2c slave address (SA)
• voltage configuration address (RAV)
• command configuration address (RAC) plus its enable bit (RACEN)
• command values for ON, ONLP, RET and OFF (CMD)

ngl, here's the catch: this function currently only allows flexible configuration of the non-default channel. like, that's just the rules rn 🫠

Starting with OMAP4, there are more than 2 channels — and one of them is defined as the default (on OMAP4, it's MPU, main character energy fr fr 👑). Only the non-default channel can be configured.

so to recap: multiple channels, one default, and only the non-default one is getting the glow-up. the default one is booked and busy elsewhere 💀

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🔥 SEE ALSO 🔥

• Kernel file ./arch/arm/mach-omap2/vc.c
• struct omap_vc_channel_cfg(9)
• omap3_set_i2c_timings(9)
• omap3_set_off_timings(9)
• omap4_calc_volt_ramp(9)
• omap4_usec_to_val_scrm(9)
• omap4_set_timings(9)
• omap4_vc_i2c_timing_init(9)
• omap_vc_i2c_init(9)
• omap_vc_calc_vsel(9)

go read those next, bestie, they're all in the friend group 💖

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and that's the whole page, hope you slayed your VC channel config ✨ this little gem lives over in ./arch/arm/mach-omap2, dated October 2026, and it came to you courtesy of the Kernel API Manual — mwah, kisses, go touch some omap registers 🎀💜