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The modem remoteproc on older Qualcomm SoCs (e.g. MSM8916 and MSM8974) implements the BAM-DMUX protocol to allow access to the network data channels of the modem. The hardware/firmware resources required to implement the BAM-DMUX driver are described in an extra node in the device tree (with the compatible "qcom,bam-dmux"). This node logically belongs below the modem remoteproc, so that both control interfaces (rpmsg_wwan_ctrl) and network interfaces (bam_dmux) have a common parent. Unlike other child devices of the modem remoteproc, the bam-dmux device currently does not follow the state of the remoteproc (i.e. it is not added/removed when the remoteproc is started/stopped). However, this is an implementation detail of the bam_dmux driver in Linux that might change in the future. To be flexible for future changes, create a standard platform device specifically only for "qcom,bam-dmux", rather than populating all child nodes. This is also more consistent with the way the other child nodes are handled in the driver. Note: of_platform_device_create() and of_node_put() have NULL-checks internally, so there is no need to check if the "qcom,bam-dmux" node actually exists in the device tree. Signed-off-by: Stephan Gerhold <stephan@gerhold.net> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Link: https://lore.kernel.org/r/20220228225400.146555-2-stephan@gerhold.net |
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| .. | ||
| da8xx_remoteproc.c | ||
| imx_dsp_rproc.c | ||
| imx_rproc.c | ||
| imx_rproc.h | ||
| ingenic_rproc.c | ||
| Kconfig | ||
| keystone_remoteproc.c | ||
| Makefile | ||
| meson_mx_ao_arc.c | ||
| mtk_common.h | ||
| mtk_scp.c | ||
| mtk_scp_ipi.c | ||
| omap_remoteproc.c | ||
| omap_remoteproc.h | ||
| pru_rproc.c | ||
| pru_rproc.h | ||
| qcom_common.c | ||
| qcom_common.h | ||
| qcom_pil_info.c | ||
| qcom_pil_info.h | ||
| qcom_q6v5.c | ||
| qcom_q6v5.h | ||
| qcom_q6v5_adsp.c | ||
| qcom_q6v5_mss.c | ||
| qcom_q6v5_pas.c | ||
| qcom_q6v5_wcss.c | ||
| qcom_sysmon.c | ||
| qcom_wcnss.c | ||
| qcom_wcnss.h | ||
| qcom_wcnss_iris.c | ||
| rcar_rproc.c | ||
| remoteproc_cdev.c | ||
| remoteproc_core.c | ||
| remoteproc_coredump.c | ||
| remoteproc_debugfs.c | ||
| remoteproc_elf_helpers.h | ||
| remoteproc_elf_loader.c | ||
| remoteproc_internal.h | ||
| remoteproc_sysfs.c | ||
| remoteproc_virtio.c | ||
| st_remoteproc.c | ||
| st_slim_rproc.c | ||
| stm32_rproc.c | ||
| ti_k3_dsp_remoteproc.c | ||
| ti_k3_r5_remoteproc.c | ||
| ti_sci_proc.h | ||
| wkup_m3_rproc.c | ||