Thread (33 messages) 33 messages, 6 authors, 2015-05-17

Re: [PATCH 5/6] ARM: dts: sunxi: Add Allwinner H3 DTSI

From: Chen-Yu Tsai <hidden>
Date: 2015-05-11 08:12:15
Also in: linux-arm-kernel, lkml

On Sat, May 9, 2015 at 7:44 PM, Maxime Ripard
[off-list ref] wrote:
On Wed, May 06, 2015 at 10:47:33PM +0200, Jens Kuske wrote:
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+ *     You should have received a copy of the GNU General Public
+ *     License along with this file; if not, write to the Free
+ *     Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
+ *     MA 02110-1301 USA
Could you remove that last paragraph?
It generates a checkpatch warning.
Sure, will be removed. Just copied it from some other sunxi dtsi.
Yeah, I know, I'm even the one that introduced this in the first place
:)

I sent a patch earlier this week to remove it from the other DT.
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+          ahb12_rst: reset@01c202c0 {
+                  #reset-cells = <1>;
+                  compatible = "allwinner,sun6i-a31-clock-reset";
+                  reg = <0x01c202c0 0xc>;
+          };
This reset controller also resets the timers, it should be initialised
much earlier.

What about having an allwinner,sun8i-h3-bus-reset, and adding it to
the list of compatibles to initialise earlier in
drivers/reset/reset-sunxi.c?

Of course, it would cover the other reset controllers that you have
below.
You mean using a single bus_rst instead of the three?
Yes.
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Or, why not using allwinner,sun6i-a31-ahb1-reset for ahb12_rst
Strictly speaking, they do not control the same set of devices. I'd
prefer to have a different compatible in case we need to setup a
particular behaviour on a given SoC (for example, force out of reset a
particular device, even if no driver is actually using it), without
impacting the other.
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and adding a .init_time = sun6i_timer_init to the sun8i machine.
But we will need to do that yes.
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I'm a bit confused here now, because for A23, which is almost
identical, it got removed after your comment:
http://lists.infradead.org/pipermail/linux-arm-kernel/2014-June/265064.html
Hmmmm, I think I somehow overlooked the fact that the timer was there,
even though Chen-Yu said it. My bad :/
On the A23, the high speed timer block only has 1 timer. The sun5i-hrtimer
driver requires 2, and turns out we weren't using them anyway, so I just
dropped sun5i-hrtimer support on A23.

If the other sun8i SoCs have 2 or more timers, feel free to support them.

ChenYu
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