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MIPS: TXx9: stop_unused_modules

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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>
This commit is contained in:
Atsushi Nemoto
2008-09-01 22:22:36 +09:00
committed by Ralf Baechle
parent 9bed90c6a4
commit f6d9831bb1
2 changed files with 87 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files

31
arch/mips/txx9/generic/setup_tx4927.c
View File

@@ -252,3 +252,34 @@ void __init tx4927_mtd_init(int ch)
return; /* disabled */ return; /* disabled */
txx9_physmap_flash_init(ch, start, size, &pdata); 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);

56
arch/mips/txx9/generic/setup_tx4938.c
View File

@@ -334,3 +334,59 @@ void __init tx4938_mtd_init(int ch)
return; /* disabled */ return; /* disabled */
txx9_physmap_flash_init(ch, start, size, &pdata); 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);