UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

mfd: Differentiate between u8500 and u9540 TCDM address mapping 

The TCDM mappings are quite different from u8500 to u9540. If these
aren't correctly specified for a given board, it will fail to boot.
Here we add the correct TCDM base for the u9540.

Please note that although this patch allows us to boot the u9540,
it doesn't provide us with full enablement. For that, another
patch-set will follow which completely re-vamps the way the PRCMU
is passed TCDM mappings.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Lee Jones 2012-11-05 16:10:36 +01:00 committed by Samuel Ortiz
parent 8c4203cb58
commit b851c06c24
1 changed files with 6 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
drivers/mfd/db8500-prcmu.c
View File

@ -2711,7 +2711,7 @@ static int db8500_irq_init(struct device_node *np)
void __init db8500_prcmu_early_init(void)
{
if (cpu_is_u8500v2()) {
if (cpu_is_u8500v2() || cpu_is_u9540()) {
void *tcpm_base = ioremap_nocache(U8500_PRCMU_TCPM_BASE, SZ_4K);
if (tcpm_base != NULL) {
@ -2729,7 +2729,11 @@ void __init db8500_prcmu_early_init(void)
iounmap(tcpm_base);
}
tcdm_base = __io_address(U8500_PRCMU_TCDM_BASE);
if (cpu_is_u9540())
tcdm_base = ioremap_nocache(U8500_PRCMU_TCDM_BASE,
SZ_4K + SZ_8K) + SZ_8K;
else
tcdm_base = __io_address(U8500_PRCMU_TCDM_BASE);
} else {
pr_err("prcmu: Unsupported chip version\n");
BUG();