From: Peng Fan peng.fan@nxp.com
To fused part, we need to disable nodes of dtb to let kernel boot.
To mfgtool, USB issue when using super-speed for mfgtool, temporally work around the problem to use high-speed only.
Signed-off-by: Peng Fan peng.fan@nxp.com --- arch/arm/mach-imx/imx8m/soc.c | 333 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 333 insertions(+)
diff --git a/arch/arm/mach-imx/imx8m/soc.c b/arch/arm/mach-imx/imx8m/soc.c index 9517a7cfcf..bb2f112af6 100644 --- a/arch/arm/mach-imx/imx8m/soc.c +++ b/arch/arm/mach-imx/imx8m/soc.c @@ -428,12 +428,298 @@ bool is_usb_boot(void) }
#ifdef CONFIG_OF_SYSTEM_SETUP +bool check_fdt_new_path(void *blob) +{ + const char *soc_path = "/soc@0"; + int nodeoff; + + nodeoff = fdt_path_offset(blob, soc_path); + if (nodeoff < 0) + return false; + + return true; +} + +static int disable_fdt_nodes(void *blob, const char *const nodes_path[], int size_array) +{ + int i = 0; + int rc; + int nodeoff; + const char *status = "disabled"; + + for (i = 0; i < size_array; i++) { + nodeoff = fdt_path_offset(blob, nodes_path[i]); + if (nodeoff < 0) + continue; /* Not found, skip it */ + + printf("Found %s node\n", nodes_path[i]); + +add_status: + rc = fdt_setprop(blob, nodeoff, "status", status, strlen(status) + 1); + if (rc) { + if (rc == -FDT_ERR_NOSPACE) { + rc = fdt_increase_size(blob, 512); + if (!rc) + goto add_status; + } + printf("Unable to update property %s:%s, err=%s\n", + nodes_path[i], "status", fdt_strerror(rc)); + } else { + printf("Modify %s:%s disabled\n", + nodes_path[i], "status"); + } + } + + return 0; +} + +#ifdef CONFIG_IMX8MQ +bool check_dcss_fused(void) +{ + struct ocotp_regs *ocotp = (struct ocotp_regs *)OCOTP_BASE_ADDR; + struct fuse_bank *bank = &ocotp->bank[1]; + struct fuse_bank1_regs *fuse = + (struct fuse_bank1_regs *)bank->fuse_regs; + u32 value = readl(&fuse->tester4); + + if (value & 0x4000000) + return true; + + return false; +} + +static int disable_mipi_dsi_nodes(void *blob) +{ + static const char * const nodes_path[] = { + "/mipi_dsi@30A00000", + "/mipi_dsi_bridge@30A00000", + "/dsi_phy@30A00300", + "/soc@0/bus@30800000/mipi_dsi@30a00000", + "/soc@0/bus@30800000/dphy@30a00300" + }; + + return disable_fdt_nodes(blob, nodes_path, ARRAY_SIZE(nodes_path)); +} + +static int disable_dcss_nodes(void *blob) +{ + static const char * const nodes_path[] = { + "/dcss@0x32e00000", + "/dcss@32e00000", + "/hdmi@32c00000", + "/hdmi_cec@32c33800", + "/hdmi_drm@32c00000", + "/display-subsystem", + "/sound-hdmi", + "/sound-hdmi-arc", + "/soc@0/bus@32c00000/display-controller@32e00000", + "/soc@0/bus@32c00000/hdmi@32c00000", + }; + + return disable_fdt_nodes(blob, nodes_path, ARRAY_SIZE(nodes_path)); +} + +static int check_mipi_dsi_nodes(void *blob) +{ + static const char * const lcdif_path[] = { + "/lcdif@30320000", + "/soc@0/bus@30000000/lcdif@30320000" + }; + static const char * const mipi_dsi_path[] = { + "/mipi_dsi@30A00000", + "/soc@0/bus@30800000/mipi_dsi@30a00000" + }; + static const char * const lcdif_ep_path[] = { + "/lcdif@30320000/port@0/mipi-dsi-endpoint", + "/soc@0/bus@30000000/lcdif@30320000/port@0/endpoint" + }; + static const char * const mipi_dsi_ep_path[] = { + "/mipi_dsi@30A00000/port@1/endpoint", + "/soc@0/bus@30800000/mipi_dsi@30a00000/ports/port@0/endpoint" + }; + + int lookup_node; + int nodeoff; + bool new_path = check_fdt_new_path(blob); + int i = new_path ? 1 : 0; + + nodeoff = fdt_path_offset(blob, lcdif_path[i]); + if (nodeoff < 0 || !fdtdec_get_is_enabled(blob, nodeoff)) { + /* + * If can't find lcdif node or lcdif node is disabled, + * then disable all mipi dsi, since they only can input + * from DCSS + */ + return disable_mipi_dsi_nodes(blob); + } + + nodeoff = fdt_path_offset(blob, mipi_dsi_path[i]); + if (nodeoff < 0 || !fdtdec_get_is_enabled(blob, nodeoff)) + return 0; + + nodeoff = fdt_path_offset(blob, lcdif_ep_path[i]); + if (nodeoff < 0) { + /* + * If can't find lcdif endpoint, then disable all mipi dsi, + * since they only can input from DCSS + */ + return disable_mipi_dsi_nodes(blob); + } + + lookup_node = fdtdec_lookup_phandle(blob, nodeoff, "remote-endpoint"); + nodeoff = fdt_path_offset(blob, mipi_dsi_ep_path[i]); + + if (nodeoff > 0 && nodeoff == lookup_node) + return 0; + + return disable_mipi_dsi_nodes(blob); +} +#endif + +int disable_vpu_nodes(void *blob) +{ + static const char * const nodes_path_8mq[] = { + "/vpu@38300000", + "/soc@0/vpu@38300000" + }; + + static const char * const nodes_path_8mm[] = { + "/vpu_g1@38300000", + "/vpu_g2@38310000", + "/vpu_h1@38320000" + }; + + static const char * const nodes_path_8mp[] = { + "/vpu_g1@38300000", + "/vpu_g2@38310000", + "/vpu_vc8000e@38320000" + }; + + if (is_imx8mq()) + return disable_fdt_nodes(blob, nodes_path_8mq, ARRAY_SIZE(nodes_path_8mq)); + else if (is_imx8mm()) + return disable_fdt_nodes(blob, nodes_path_8mm, ARRAY_SIZE(nodes_path_8mm)); + else if (is_imx8mp()) + return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp)); + else + return -EPERM; +} + +int disable_gpu_nodes(void *blob) +{ + static const char * const nodes_path_8mn[] = { + "/gpu@38000000" + }; + + return disable_fdt_nodes(blob, nodes_path_8mn, ARRAY_SIZE(nodes_path_8mn)); +} + +int disable_npu_nodes(void *blob) +{ + static const char * const nodes_path_8mp[] = { + "/vipsi@38500000" + }; + + return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp)); +} + +int disable_isp_nodes(void *blob) +{ + static const char * const nodes_path_8mp[] = { + "/soc@0/bus@32c00000/camera/isp@32e10000", + "/soc@0/bus@32c00000/camera/isp@32e20000" + }; + + return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp)); +} + +int disable_dsp_nodes(void *blob) +{ + static const char * const nodes_path_8mp[] = { + "/dsp@3b6e8000" + }; + + return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp)); +} + +static int disable_cpu_nodes(void *blob, u32 disabled_cores) +{ + static const char * const nodes_path[] = { + "/cpus/cpu@1", + "/cpus/cpu@2", + "/cpus/cpu@3", + }; + u32 i = 0; + int rc; + int nodeoff; + + if (disabled_cores > 3) + return -EINVAL; + + i = 3 - disabled_cores; + + for (; i < 3; i++) { + nodeoff = fdt_path_offset(blob, nodes_path[i]); + if (nodeoff < 0) + continue; /* Not found, skip it */ + + debug("Found %s node\n", nodes_path[i]); + + rc = fdt_del_node(blob, nodeoff); + if (rc < 0) { + printf("Unable to delete node %s, err=%s\n", + nodes_path[i], fdt_strerror(rc)); + } else { + printf("Delete node %s\n", nodes_path[i]); + } + } + + return 0; +} + int ft_system_setup(void *blob, bd_t *bd) { +#ifdef CONFIG_IMX8MQ int i = 0; int rc; int nodeoff;
+ if (get_boot_device() == USB_BOOT) { + disable_dcss_nodes(blob); + + bool new_path = check_fdt_new_path(blob); + int v = new_path ? 1 : 0; + static const char * const usb_dwc3_path[] = { + "/usb@38100000/dwc3", + "/soc@0/usb@38100000" + }; + + nodeoff = fdt_path_offset(blob, usb_dwc3_path[v]); + if (nodeoff >= 0) { + const char *speed = "high-speed"; + + printf("Found %s node\n", usb_dwc3_path[v]); + +usb_modify_speed: + + rc = fdt_setprop(blob, nodeoff, "maximum-speed", speed, strlen(speed) + 1); + if (rc) { + if (rc == -FDT_ERR_NOSPACE) { + rc = fdt_increase_size(blob, 512); + if (!rc) + goto usb_modify_speed; + } + printf("Unable to set property %s:%s, err=%s\n", + usb_dwc3_path[v], "maximum-speed", fdt_strerror(rc)); + } else { + printf("Modify %s:%s = %s\n", + usb_dwc3_path[v], "maximum-speed", speed); + } + } else { + printf("Can't found %s node\n", usb_dwc3_path[v]); + } + } + /* Disable the CPU idle for A0 chip since the HW does not support it */ if (is_soc_rev(CHIP_REV_1_0)) { static const char * const nodes_path[] = { @@ -464,6 +750,53 @@ int ft_system_setup(void *blob, bd_t *bd) } }
+ if (is_imx8mql()) { + disable_vpu_nodes(blob); + if (check_dcss_fused()) { + printf("DCSS is fused\n"); + disable_dcss_nodes(blob); + check_mipi_dsi_nodes(blob); + } + } + + if (is_imx8md()) + disable_cpu_nodes(blob, 2); + +#elif defined(CONFIG_IMX8MM) + if (is_imx8mml() || is_imx8mmdl() || is_imx8mmsl()) + disable_vpu_nodes(blob); + + if (is_imx8mmd() || is_imx8mmdl()) + disable_cpu_nodes(blob, 2); + else if (is_imx8mms() || is_imx8mmsl()) + disable_cpu_nodes(blob, 3); + +#elif defined(CONFIG_IMX8MN) + if (is_imx8mnl() || is_imx8mndl() || is_imx8mnsl()) + disable_gpu_nodes(blob); + + if (is_imx8mnd() || is_imx8mndl()) + disable_cpu_nodes(blob, 2); + else if (is_imx8mns() || is_imx8mnsl()) + disable_cpu_nodes(blob, 3); + +#elif defined(CONFIG_IMX8MP) + if (is_imx8mpl() || is_imx8mp7()) + disable_vpu_nodes(blob); + + if (is_imx8mpl() || is_imx8mp6() || is_imx8mp5()) + disable_npu_nodes(blob); + + if (is_imx8mpl() || is_imx8mp5()) + disable_isp_nodes(blob); + + if (is_imx8mpl() || is_imx8mp7() || is_imx8mp6() || is_imx8mp5()) + disable_dsp_nodes(blob); + + if (is_imx8mpd()) + disable_cpu_nodes(blob, 2); +#endif + return 0; } #endif