Thread (22 messages) 22 messages, 4 authors, 2017-09-22

[PATCH v1 03/10] clk: at91: pmc: Support backup for programmable clocks

From: nicolas.ferre@microchip.com (Nicolas Ferre)
Date: 2017-09-14 09:38:27
Also in: linux-clk, linux-iio, linux-pwm, linux-serial, lkml

On 14/09/2017 at 09:41, romain izard wrote:
2017-09-13 19:03 GMT+02:00 Alexandre Belloni
[off-list ref]:
quoted
On 13/09/2017 at 14:29:35 +0200, Nicolas Ferre wrote:
quoted
On 08/09/2017 at 17:35, Romain Izard wrote:
quoted
From: Romain Izard <redacted>

Save and restore the System Clock and Programmable Clock register for
the backup use case.
"System Clock" seems to be handled in another patch.
quoted
Signed-off-by: Romain Izard <redacted>
---
 drivers/clk/at91/pmc.c | 5 +++++
 1 file changed, 5 insertions(+)
diff --git a/drivers/clk/at91/pmc.c b/drivers/clk/at91/pmc.c
index 07dc2861ad3f..5421b03553ec 100644
--- a/drivers/clk/at91/pmc.c
+++ b/drivers/clk/at91/pmc.c
@@ -66,6 +66,7 @@ static struct
    u32 pcr[PMC_MAX_IDS];
    u32 audio_pll0;
    u32 audio_pll1;
+   u32 pckr[3];
Some products have different numbers of PCK (only 2 on at91sam9x5 for
instance)...
My opinion is that it will be time to change that when multiple SoCs will
need to save their registers.
For the next version, I'll add a #define. But as this code requires a
device tree node with the compatible string "atmel,sama5d2-pmc", I believe
that we can ignore other chips for now.
Fair enough, let's go for this.

Bye,
-- 
Nicolas Ferre
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