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cavs: enable power gating of unused memory banks for cavs 2.x hw 

The change adds power gating of unused memory banks for cavs 2.0/2.5
hardware on top of previously enabled flow for cavs 1.8.

Signed-off-by: Lech Betlej <lech.betlej@linux.intel.com>
This commit is contained in:
Lech Betlej 2020-01-29 15:30:57 +01:00 committed by Tomasz Lauda
parent 6d8940ce86
commit 031ab223a0
1 changed files with 6 additions and 5 deletions
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11
src/arch/xtensa/boot_loader.c
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@ -4,6 +4,7 @@
//
// Author: Liam Girdwood <liam.r.girdwood@linux.intel.com>
#include <cavs/version.h>
#include <sof/bit.h>
#include <sof/lib/cache.h>
#include <sof/lib/io.h>
@ -168,8 +169,7 @@ static void parse_manifest(void)
}
#endif
#if CONFIG_CANNONLAKE
#if CAVS_VERSION >= CAVS_VERSION_1_8
/* function powers up a number of memory banks provided as an argument and
* gates remaining memory banks
*/
@ -178,6 +178,7 @@ static int32_t hp_sram_pm_banks(uint32_t banks)
int delay_count = 256;
uint32_t status;
uint32_t ebb_mask0, ebb_mask1, ebb_avail_mask0, ebb_avail_mask1;
uint32_t total_banks_count = PLATFORM_HPSRAM_EBB_COUNT;
shim_write(SHIM_LDOCTL, SHIM_LDOCTL_HPSRAM_LDO_ON);
@ -187,12 +188,12 @@ static int32_t hp_sram_pm_banks(uint32_t banks)
/* bit masks reflect total number of available EBB (banks) in each
* segment; current implementation supports 2 segments 0,1
*/
if (PLATFORM_HPSRAM_EBB_COUNT > EBB_SEGMENT_SIZE) {
if (total_banks_count > EBB_SEGMENT_SIZE) {
ebb_avail_mask0 = (uint32_t)MASK(EBB_SEGMENT_SIZE - 1, 0);
ebb_avail_mask1 = (uint32_t)MASK(PLATFORM_HPSRAM_EBB_COUNT -
ebb_avail_mask1 = (uint32_t)MASK(total_banks_count -
EBB_SEGMENT_SIZE - 1, 0);
} else{
ebb_avail_mask0 = (uint32_t)MASK(PLATFORM_HPSRAM_EBB_COUNT - 1,
ebb_avail_mask0 = (uint32_t)MASK(total_banks_count - 1,
0);
ebb_avail_mask1 = 0;
}