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accel/ivpu: Set 500 ns delay between power island TRICKLE and ENABLE

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Follow HW documentation recommendation of 500 ns delay between setting
AON_PWR_ISLAND_TRICKLE_EN and AON_PWR_ISLAND_EN registers during power
island enabling. Previously this was only done correctly for VPU 4+.
VPU 3.7 had the delay added after power island disable where it is not
needed.

Signed-off-by: Karol Wachowski <karol.wachowski@intel.com>
Reviewed-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240930195322.461209-10-jacek.lawrynowicz@linux.intel.com
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
This commit is contained in:
Karol Wachowski 2024-09-30 21:53:00 +02:00 committed by Jacek Lawrynowicz
parent 5e162f872d
commit 525a3858aa
1 changed files with 2 additions and 6 deletions
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8
drivers/accel/ivpu/ivpu_hw_ip.c
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@ -311,9 +311,6 @@ static void pwr_island_trickle_drive_40xx(struct ivpu_device *vdev, bool enable)
val = REG_CLR_FLD(VPU_40XX_HOST_SS_AON_PWR_ISLAND_TRICKLE_EN0, CSS_CPU, val);
REGV_WR32(VPU_40XX_HOST_SS_AON_PWR_ISLAND_TRICKLE_EN0, val);
if (enable)
ndelay(500);
}
static void pwr_island_drive_37xx(struct ivpu_device *vdev, bool enable)
@ -326,9 +323,6 @@ static void pwr_island_drive_37xx(struct ivpu_device *vdev, bool enable)
val = REG_CLR_FLD(VPU_40XX_HOST_SS_AON_PWR_ISLAND_EN0, CSS_CPU, val);
REGV_WR32(VPU_40XX_HOST_SS_AON_PWR_ISLAND_EN0, val);
if (!enable)
ndelay(500);
}
static void pwr_island_drive_40xx(struct ivpu_device *vdev, bool enable)
@ -347,9 +341,11 @@ static void pwr_island_enable(struct ivpu_device *vdev)
{
if (ivpu_hw_ip_gen(vdev) == IVPU_HW_IP_37XX) {
pwr_island_trickle_drive_37xx(vdev, true);
ndelay(500);
pwr_island_drive_37xx(vdev, true);
} else {
pwr_island_trickle_drive_40xx(vdev, true);
ndelay(500);
pwr_island_drive_40xx(vdev, true);
}
}