RE: [RFC 0/4] clk: imx: Register the dram_apb and dram_alt as read-only

From: Peng Fan <peng.fan@nxp.com>
To: Abel Vesa <abel.vesa@nxp.com>, Shawn Guo <shawnguo@kernel.org>,
	Stephen Boyd <sboyd@kernel.org>,
	Aisheng Dong <aisheng.dong@nxp.com>,
	Anson Huang <anson.huang@nxp.com>
Cc: dl-linux-imx <linux-imx@nxp.com>,
	"linux-clk@vger.kernel.org" <linux-clk@vger.kernel.org>,
	"linux-arm-kernel@lists.infradead.org" 
	<linux-arm-kernel@lists.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
	Abel Vesa <abel.vesa@nxp.com>
Subject: RE: [RFC 0/4] clk: imx: Register the dram_apb and dram_alt as read-only
Date: Tue, 17 Nov 2020 02:47:53 +0000	[thread overview]
Message-ID: <DB6PR0402MB276070853555160D0AB5641C88E20@DB6PR0402MB2760.eurprd04.prod.outlook.com> (raw)
In-Reply-To: <1603301815-24670-1-git-send-email-abel.vesa@nxp.com>

> Subject: [RFC 0/4] clk: imx: Register the dram_apb and dram_alt as read-only

Any follow up about this patchset?

Regards,
Peng.

> 
> On i.MX8M platforms the dram_apb and dram_alt are controlled from EL3.
> So in order to keep track of the actual clock tree in kernel, we need to
> actually declare the clocks but never write to any of their registes.
> We do that by registering the clocks with only the ops that read but never
> write the registers.
> 
> Abel Vesa (4):
>   clk: Add CLK_GET_PARENT_NOCACHE flag
>   clk: Add clk_gate_ro_ops for read-only gate clocks
>   clk: imx: composite-8m: Add DRAM clock registration variant
>   clk: imx8m: Use dram variant registration for dram clocks
> 
>  drivers/clk/clk-gate.c             |  5 +++++
>  drivers/clk/clk.c                  | 31 +++++++++++++++++--------------
>  drivers/clk/imx/clk-composite-8m.c | 12 +++++++++++-
>  drivers/clk/imx/clk-imx8mm.c       |  4 ++--
>  drivers/clk/imx/clk-imx8mn.c       |  4 ++--
>  drivers/clk/imx/clk-imx8mp.c       |  4 ++--
>  drivers/clk/imx/clk-imx8mq.c       |  4 ++--
>  drivers/clk/imx/clk.h              |  7 +++++++
>  include/linux/clk-provider.h       |  2 ++
>  9 files changed, 50 insertions(+), 23 deletions(-)
> 
> --
> 2.7.4