diff options
| -rw-r--r-- | arch/arm/mach-snapdragon/of_fixup.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/arch/arm/mach-snapdragon/of_fixup.c b/arch/arm/mach-snapdragon/of_fixup.c index 4fdfed2dff1..3f7ac227bd0 100644 --- a/arch/arm/mach-snapdragon/of_fixup.c +++ b/arch/arm/mach-snapdragon/of_fixup.c @@ -22,6 +22,7 @@ #include <dm/of.h> #include <fdt_support.h> #include <linux/errno.h> +#include <stdlib.h> #include <time.h> /* U-Boot only supports USB high-speed mode on Qualcomm platforms with DWC3 @@ -110,6 +111,36 @@ static void fixup_usb_nodes(void) } } +/* Remove all references to the rpmhpd device */ +static void fixup_power_domains(void) +{ + struct device_node *pd = NULL, *np = NULL; + struct property *prop; + const __be32 *val; + + /* All Qualcomm platforms name the rpm(h)pd "power-controller" */ + for_each_of_allnodes(pd) { + if (pd->name && !strcmp("power-controller", pd->name)) + break; + } + + /* Sanity check that this is indeed a power domain controller */ + if (!of_find_property(pd, "#power-domain-cells", NULL)) { + log_err("Found power-controller but it doesn't have #power-domain-cells\n"); + return; + } + + /* Remove all references to the power domain controller */ + for_each_of_allnodes(np) { + if (!(prop = of_find_property(np, "power-domains", NULL))) + continue; + + val = prop->value; + if (val[0] == cpu_to_fdt32(pd->phandle)) + of_remove_property(np, prop); + } +} + #define time_call(func, ...) \ do { \ u64 start = timer_get_us(); \ @@ -120,4 +151,5 @@ static void fixup_usb_nodes(void) void qcom_of_fixup_nodes(void) { time_call(fixup_usb_nodes); + time_call(fixup_power_domains); } |