[S] Change in coreboot[main]: mb/google/trulo/var/uldrenite: Add fw_config probe for Cellular

[John Su (Code Review)]

Attention is currently required from: Dinesh Gehlot, Dtrain Hsu, Eric Lai, Jayvik Desai, Kapil Porwal, Nick Vaccaro, Subrata Banik.

John Su has posted comments on this change by John Su. ( https://review.coreboot.org/c/coreboot/+/86255?usp=email )

Change subject: mb/google/trulo/var/uldrenite: Add fw_config probe for Cellular
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Patch Set 3:

(3 comments)

File src/mainboard/google/brya/variants/uldrenite/overridetree.cb:

https://review.coreboot.org/c/coreboot/+/86255/comment/7be20b0b_b4477d1b?usp... :
PS2, Line 476: end
> Should we also need to disable pcie_rp2 when CELLULAR_ABSENT? […]

Done

File src/mainboard/google/brya/variants/uldrenite/variant.c:

https://review.coreboot.org/c/coreboot/+/86255/comment/d661226e_3b2e21a0?usp... :
PS2, Line 67: {
> The "{" and "}" will make no WWAN power sequence when fw_config is CELLULAR_RW350R.

Done

https://review.coreboot.org/c/coreboot/+/86255/comment/1e0fb802_6eb8aa0c?usp... :
PS2, Line 67: 	if (fw_config_probe(FW_CONFIG(DB_CELLULAR, CELLULAR_ABSENT))) {
            : 		return;
            : 		/*
            : 		 * RW350R power on seuqence:
            : 		 * De-assert WWAN_EN -> 20ms -> de-assert WWAN_RST -> 30ms ->
            : 		 * de-assert WWAN_PERST
            : 		 */
            : 		gpio_configure_pads(rw350r_en_pad, ARRAY_SIZE(rw350r_en_pad));
            : 		mdelay(RW350R_RST_DELAY_MS);
            : 		gpio_configure_pads(rw350r_rst_pad, ARRAY_SIZE(rw350r_rst_pad));
            : 		mdelay(RW350R_PERST_DELAY_MS);
            : 		gpio_configure_pads(rw350r_perst_pad, ARRAY_SIZE(rw350r_perst_pad));
            : 	}
>

Done