TXx9 SoCs have pin multiplex. Stop some controller modules which can
not be used due to pin configurations.
Signed-off-by: Atsushi Nemoto <anemo@xxxxxxxxxxxxx>
---
arch/mips/txx9/generic/setup_tx4927.c | 31 ++++++++++++++++++
arch/mips/txx9/generic/setup_tx4938.c | 56 +++++++++++++++++++++++++++++++++
2 files changed, 87 insertions(+), 0 deletions(-)
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 @@ void __init tx4927_mtd_init(int ch)
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);
diff --git a/arch/mips/txx9/generic/setup_tx4938.c b/arch/mips/txx9/generic/setup_tx4938.c
index 0d8517a..af724e5 100644
--- a/arch/mips/txx9/generic/setup_tx4938.c
+++ b/arch/mips/txx9/generic/setup_tx4938.c
@@ -334,3 +334,59 @@ void __init tx4938_mtd_init(int ch)
return; /* disabled */
txx9_physmap_flash_init(ch, start, size, &pdata);
}
+
+static void __init tx4938_stop_unused_modules(void)
+{
+ __u64 pcfg, rst = 0, ckd = 0;
+ char buf[128];
+
+ buf[0] = '\0';
+ local_irq_disable();
+ pcfg = ____raw_readq(&tx4938_ccfgptr->pcfg);
+ switch (txx9_pcode) {
+ case 0x4937:
+ if (!(pcfg & TX4938_PCFG_SEL2)) {
+ rst |= TX4938_CLKCTR_ACLRST;
+ ckd |= TX4938_CLKCTR_ACLCKD;
+ strcat(buf, " ACLC");
+ }
+ break;
+ case 0x4938:
+ if (!(pcfg & TX4938_PCFG_SEL2) ||
+ (pcfg & TX4938_PCFG_ETH0_SEL)) {
+ rst |= TX4938_CLKCTR_ACLRST;
+ ckd |= TX4938_CLKCTR_ACLCKD;
+ strcat(buf, " ACLC");
+ }
+ if ((pcfg &
+ (TX4938_PCFG_ATA_SEL | TX4938_PCFG_ISA_SEL |
+ TX4938_PCFG_NDF_SEL))
+ != TX4938_PCFG_NDF_SEL) {
+ rst |= TX4938_CLKCTR_NDFRST;
+ ckd |= TX4938_CLKCTR_NDFCKD;
+ strcat(buf, " NDFMC");
+ }
+ if (!(pcfg & TX4938_PCFG_SPI_SEL)) {
+ rst |= TX4938_CLKCTR_SPIRST;
+ ckd |= TX4938_CLKCTR_SPICKD;
+ strcat(buf, " SPI");
+ }
+ break;
+ }
+ if (rst | ckd) {
+ txx9_set64(&tx4938_ccfgptr->clkctr, rst);
+ txx9_set64(&tx4938_ccfgptr->clkctr, ckd);
+ }
+ local_irq_enable();
+ if (buf[0])
+ pr_info("%s: stop%s\n", txx9_pcode_str, buf);
+}
+
+static int __init tx4938_late_init(void)
+{
+ if (txx9_pcode != 0x4937 && txx9_pcode != 0x4938)
+ return -ENODEV;
+ tx4938_stop_unused_modules();
+ return 0;
+}
+late_initcall(tx4938_late_init);
--
1.5.6.3
