[PATCH v2 6/7] clk: sunxi-ng: Add A23 CCU
From: Maxime Ripard <hidden>
Date: 2016-09-08 09:20:29
Also in:
linux-clk, linux-devicetree, lkml
On Thu, Sep 08, 2016 at 04:32:25PM +0800, Chen-Yu Tsai wrote:
On Thu, Sep 8, 2016 at 4:29 PM, Maxime Ripard [off-list ref] wrote:quoted
On Wed, Sep 07, 2016 at 03:24:11PM +0800, Chen-Yu Tsai wrote:quoted
quoted
+ [CLK_BUS_MSGBOX] = &bus_msgbox_clk.common.hw,A23 manual and Allwinner sources say there is a bus gate for SPINLOCK. Tested it myself, and it indeed exists.Yes, sorry. It was supposed to be spinlock instead of msgbox.quoted
quoted
+ [RST_BUS_SPINLOCK] = { 0x2c4, BIT(22) },Allwinner sources say there is a reset control for MSGBOX. Tested it myself, and it indeed exists.However, the msgbox is mentionned nowhere in the datasheet. I'd prefer to be able to test that it actually works before adding it to the clock driver.I did in fact test it. With reset asserted, writes get ignored, and reads produce all 0s. With the reset deasserted and clock enabled, reads give the default value and writes stick. Afterwards when I toggle the reset, the values revert to the default.
Ok. Maxime -- Maxime Ripard, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: not available URL: <http://lists.infradead.org/pipermail/linux-arm-kernel/attachments/20160908/97a9d8d9/attachment.sig>