leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

imx: imx8mp: disable fused IP for UltraLite

Browse Source 
Beside the fused modules on iMX8MP Lite, this part has also fused
GPU3D/2D, LVDS and MIPI DSI.
So we have to disable them for kernel and also disable MIPI DSI
in u-boot DTS for splash screen at runtime.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
This commit is contained in:
Peng Fan 2022-04-07 15:55:53 +08:00 committed by Stefano Babic
parent 36bfd71c92
commit 35bb60787b
1 changed files with 142 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

147
arch/arm/mach-imx/imx8m/soc.c
View File

@ -911,6 +911,90 @@ static int low_drive_gpu_freq(void *blob)
}
#endif
static bool check_remote_endpoint(void *blob, const char *ep1, const char *ep2)
{
int lookup_node;
int nodeoff;
nodeoff = fdt_path_offset(blob, ep1);
if (nodeoff) {
lookup_node = fdtdec_lookup_phandle(blob, nodeoff, "remote-endpoint");
nodeoff = fdt_path_offset(blob, ep2);
if (nodeoff > 0 && nodeoff == lookup_node)
return true;
}
return false;
}
int disable_dsi_lcdif_nodes(void *blob)
{
int ret;
static const char * const dsi_path_8mp[] = {
"/soc@0/bus@32c00000/mipi_dsi@32e60000"
};
static const char * const lcdif_path_8mp[] = {
"/soc@0/bus@32c00000/lcd-controller@32e80000"
};
static const char * const lcdif_ep_path_8mp[] = {
"/soc@0/bus@32c00000/lcd-controller@32e80000/port@0/endpoint"
};
static const char * const dsi_ep_path_8mp[] = {
"/soc@0/bus@32c00000/mipi_dsi@32e60000/port@0/endpoint"
};
ret = disable_fdt_nodes(blob, dsi_path_8mp, ARRAY_SIZE(dsi_path_8mp));
if (ret)
return ret;
if (check_remote_endpoint(blob, dsi_ep_path_8mp[0], lcdif_ep_path_8mp[0])) {
/* Disable lcdif node */
return disable_fdt_nodes(blob, lcdif_path_8mp, ARRAY_SIZE(lcdif_path_8mp));
}
return 0;
}
int disable_lvds_lcdif_nodes(void *blob)
{
int ret, i;
static const char * const ldb_path_8mp[] = {
"/soc@0/bus@32c00000/ldb@32ec005c",
"/soc@0/bus@32c00000/phy@32ec0128"
};
static const char * const lcdif_path_8mp[] = {
"/soc@0/bus@32c00000/lcd-controller@32e90000"
};
static const char * const lcdif_ep_path_8mp[] = {
"/soc@0/bus@32c00000/lcd-controller@32e90000/port@0/endpoint@0",
"/soc@0/bus@32c00000/lcd-controller@32e90000/port@0/endpoint@1"
};
static const char * const ldb_ep_path_8mp[] = {
"/soc@0/bus@32c00000/ldb@32ec005c/lvds-channel@0/port@0/endpoint",
"/soc@0/bus@32c00000/ldb@32ec005c/lvds-channel@1/port@0/endpoint"
};
ret = disable_fdt_nodes(blob, ldb_path_8mp, ARRAY_SIZE(ldb_path_8mp));
if (ret)
return ret;
for (i = 0; i < ARRAY_SIZE(ldb_ep_path_8mp); i++) {
if (check_remote_endpoint(blob, ldb_ep_path_8mp[i], lcdif_ep_path_8mp[i])) {
/* Disable lcdif node */
return disable_fdt_nodes(blob, lcdif_path_8mp, ARRAY_SIZE(lcdif_path_8mp));
}
}
return 0;
}
int disable_gpu_nodes(void *blob)
{
static const char * const nodes_path_8mn[] = {
@ -918,7 +1002,15 @@ int disable_gpu_nodes(void *blob)
"/soc@/gpu@38000000"
};
return disable_fdt_nodes(blob, nodes_path_8mn, ARRAY_SIZE(nodes_path_8mn));
static const char * const nodes_path_8mp[] = {
"/gpu3d@38000000",
"/gpu2d@38008000"
};
if (is_imx8mp())
return disable_fdt_nodes(blob, nodes_path_8mp, ARRAY_SIZE(nodes_path_8mp));
else
return disable_fdt_nodes(blob, nodes_path_8mn, ARRAY_SIZE(nodes_path_8mn));
}
int disable_npu_nodes(void *blob)
@ -1174,16 +1266,27 @@ usb_modify_speed:
disable_cpu_nodes(blob, 3);
#elif defined(CONFIG_IMX8MP)
if (is_imx8mpl())
if (is_imx8mpul()) {
/* Disable GPU */
disable_gpu_nodes(blob);
/* Disable DSI */
disable_dsi_lcdif_nodes(blob);
/* Disable LVDS */
disable_lvds_lcdif_nodes(blob);
}
if (is_imx8mpul() || is_imx8mpl())
disable_vpu_nodes(blob);
if (is_imx8mpl() || is_imx8mp6())
if (is_imx8mpul() || is_imx8mpl() || is_imx8mp6())
disable_npu_nodes(blob);
if (is_imx8mpl())
if (is_imx8mpul() || is_imx8mpl())
disable_isp_nodes(blob);
if (is_imx8mpl() || is_imx8mp6())
if (is_imx8mpul() || is_imx8mpl() || is_imx8mp6())
disable_dsp_nodes(blob);
if (is_imx8mpd())
@ -1194,6 +1297,40 @@ usb_modify_speed:
}
#endif
#ifdef CONFIG_OF_BOARD_FIXUP
#ifndef CONFIG_SPL_BUILD
int board_fix_fdt(void *fdt)
{
if (is_imx8mpul()) {
int i = 0;
int nodeoff, ret;
const char *status = "disabled";
static const char * const dsi_nodes[] = {
"/soc@0/bus@32c00000/mipi_dsi@32e60000",
"/soc@0/bus@32c00000/lcd-controller@32e80000",
"/dsi-host"
};
for (i = 0; i < ARRAY_SIZE(dsi_nodes); i++) {
nodeoff = fdt_path_offset(fdt, dsi_nodes[i]);
if (nodeoff > 0) {
set_status:
ret = fdt_setprop(fdt, nodeoff, "status", status,
strlen(status) + 1);
if (ret == -FDT_ERR_NOSPACE) {
ret = fdt_increase_size(fdt, 512);
if (!ret)
goto set_status;
}
}
}
}
return 0;
}
#endif
#endif
#if !CONFIG_IS_ENABLED(SYSRESET)
void reset_cpu(void)
{