MIPS: TXx9: stop_unused_modules
TXx9 SoCs have pin multiplex. Stop some controller modules which can
not be used due to pin configurations.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/arch/mips/txx9/generic/setup_tx4927.c b/arch/mips/txx9/generic/setup_tx4927.c
index c4248cb..914e93c 100644
--- a/arch/mips/txx9/generic/setup_tx4927.c
+++ b/arch/mips/txx9/generic/setup_tx4927.c
@@ -252,3 +252,34 @@
return; /* disabled */
txx9_physmap_flash_init(ch, start, size, &pdata);
}
+
+static void __init tx4927_stop_unused_modules(void)
+{
+ __u64 pcfg, rst = 0, ckd = 0;
+ char buf[128];
+
+ buf[0] = '\0';
+ local_irq_disable();
+ pcfg = ____raw_readq(&tx4927_ccfgptr->pcfg);
+ if (!(pcfg & TX4927_PCFG_SEL2)) {
+ rst |= TX4927_CLKCTR_ACLRST;
+ ckd |= TX4927_CLKCTR_ACLCKD;
+ strcat(buf, " ACLC");
+ }
+ if (rst | ckd) {
+ txx9_set64(&tx4927_ccfgptr->clkctr, rst);
+ txx9_set64(&tx4927_ccfgptr->clkctr, ckd);
+ }
+ local_irq_enable();
+ if (buf[0])
+ pr_info("%s: stop%s\n", txx9_pcode_str, buf);
+}
+
+static int __init tx4927_late_init(void)
+{
+ if (txx9_pcode != 0x4927)
+ return -ENODEV;
+ tx4927_stop_unused_modules();
+ return 0;
+}
+late_initcall(tx4927_late_init);