105bef466a
Sanitized research log, build/reproducibility docs, DTS, kernel configs, patches, initramfs sources, bootchain migration plans and test logs. B5 direct boot PASS; B6 modem lifecycle in progress. No dumps, NV/EFS, vendor firmware or device identifiers included.
120 lines
3.5 KiB
Text
120 lines
3.5 KiB
Text
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Project Aurora — JZ08AU-XPA-7J-R3 (MSM8916, 512 MB, ST7735S SPI panel).
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* RAM-BOOT MODEM1: EMMC1 + MPSS remoteproc (native Aurora firmware, rmtfs -r). No BAM-DMUX/WWAN/WCNSS. Everything that could touch
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* storage, radios or power management is explicitly disabled.
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*
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* Hardware facts from stock Aurora dtb_01 (see NOTES.md S2.1/S12):
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* console = BLSP1 UART2 serial@78b0000, GPIO4 (TX) / GPIO5 (RX), 115200 8N1.
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* RAM size (memory@80000000 reg) is filled in by lk2nd from SMEM.
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*/
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/dts-v1/;
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#include "msm8916-pm8916.dtsi" /* + RPM regulators (USB PHY L7/L13) */
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/ {
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model = "JZ08AU Aurora (RAM boot BAM1)";
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compatible = "jz08au,aurora", "qcom,msm8916";
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chassis-type = "embedded";
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aliases {
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serial0 = &blsp_uart2;
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mmc0 = &sdhc_1; /* eMMC */
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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};
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&blsp_uart2 {
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pinctrl-0 = <&blsp_uart2_console_default>;
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pinctrl-1 = <&blsp_uart2_console_sleep>;
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pinctrl-names = "default", "sleep";
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status = "okay";
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};
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/* --- RAM boot MODEM1 safety: no SD slot, no Wi-Fi, no modem data plane --- */
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/* sdhc_1 (eMMC): enabled below, READ-ONLY enforced by initramfs (blockdev --setro) */
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&sdhc_2 { status = "disabled"; };
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/* usb: see peripheral block below */
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/* mpss: enabled below */
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&bam_dmux { status = "okay"; }; /* B4b1: data-plane mux driver (no bearer) */
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&bam_dmux_dma { status = "okay"; };
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&wcnss { status = "disabled"; }; /* WCNSS/pronto remoteproc */
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/*
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* USB peripheral only (ChipIdea ci-hdrc + qcom,usb-hs-phy-msm8916, upstream bindings).
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* Stock Aurora: HSUSB_1p8 = L7 1.8 V, HSUSB_3p3 = L13 3.075 V, otg-control = 2 (PMIC VBUS detect),
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* PHY init-seq identical to upstream. VBUS detect via PM8916 USB_IN (as on JZ02). No host, no role switch.
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*/
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&pm8916_usbin {
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status = "okay";
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};
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&usb {
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dr_mode = "peripheral";
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extcon = <&pm8916_usbin>;
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status = "okay";
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};
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&usb_hs_phy {
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extcon = <&pm8916_usbin>;
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};
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/*
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* Internal eMMC (stock: bootdevice=7824900.sdhci, qcom,bus-width 8, nonremovable,
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* vdd = 8916_l8 2.85-2.9 V, vdd-io = 8916_l5 1.8 V). Upstream msm8916.dtsi already provides
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* bus-width = <8>, non-removable, mmc-ddr-1_8v (no HS200 = conservative), sdc1 pinctrl;
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* msm8916-pm8916.dtsi provides vmmc = pm8916_l8, vqmmc = pm8916_l5. Only enable it here.
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*/
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&sdhc_1 {
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status = "okay";
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};
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/*
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* MPSS (modem) remoteproc, native Aurora firmware from the RO-mounted modem FAT.
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* mpss_mem: stock Aurora "modem_adsp_region" base 0x86800000 size 78 MiB (0x4e00000);
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* Aurora modem.mdt load span 0x86800000..0x8b300000 (75 MiB), same as stock PIL log.
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* mba_mem: upstream dynamic 1 MiB. pll-supply (pm8916_l7), cx/mx rpmpd from msm8916(-pm8916).dtsi.
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* Driver has auto_boot = false: MSS starts only when rmtfs (-s) requests it.
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* BAM-DMUX stays disabled (no data plane at this stage).
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*/
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&mba_mem {
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status = "okay";
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};
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&mpss_mem {
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reg = <0x0 0x86800000 0x0 0x4e00000>;
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status = "okay";
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};
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&mpss {
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pinctrl-0 = <&sim_ctrl_default>;
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pinctrl-names = "default";
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status = "okay";
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};
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/*
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* SIM routing as found on stock Aurora (dtb_01 gpio-leds default-state and live
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* Android /sys/kernel/debug/gpio): gpio1 (sim3_switch) high, gpio20 (sim_hotdet),
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* gpio22 (sim1_switch), gpio23 (sim2_switch) low. Passive routing only.
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*/
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&tlmm {
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sim_ctrl_default: sim-ctrl-default-state {
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sim-low-pins {
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pins = "gpio20", "gpio22", "gpio23";
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function = "gpio";
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bias-disable;
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output-low;
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};
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sim-high-pins {
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pins = "gpio1";
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function = "gpio";
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bias-disable;
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output-high;
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};
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};
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};
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