Hi Kevin,
On Tuesday 28 February 2012 05:58 AM, Kevin Hilman wrote:
Tero Kristo<[email protected]> writes:
From: Rajendra Nayak<[email protected]>
With no driver handling DSP/TESLA, if brought out of reset, it stays
active and does not assert standby.
Signed-off-by: Rajendra Nayak<[email protected]>
Signed-off-by: Tero Kristo<[email protected]>
Subject says 'OMAP4: suspend'. How does HWMOD_INIT_NO_RESET affect
suspend?
The v2 of this patch posted by Tero has a better $subject as suggested
by Benoit which says 'ARM: OMAP4: hwmod_data: Do not get DSP out of
reset at boot time'
The intention of this patch is to *not* get DSP out of reset at boot,
because once out of reset DSP needs some code that executes a 'wfi'
equivalent for it to assert a standby and allow suspend to sleep.
regards,
Rajendra
Kevin
---
arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index ef0524c..81d90da 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -1160,6 +1160,7 @@ static struct omap_hwmod omap44xx_dsp_hwmod = {
.name = "dsp",
.class =&omap44xx_dsp_hwmod_class,
.clkdm_name = "tesla_clkdm",
+ .flags = HWMOD_INIT_NO_RESET,
.mpu_irqs = omap44xx_dsp_irqs,
.rst_lines = omap44xx_dsp_resets,
.rst_lines_cnt = ARRAY_SIZE(omap44xx_dsp_resets),
--
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