From mboxrd@z Thu Jan 1 00:00:00 1970 From: wsa@the-dreams.de (Wolfram Sang) Date: Wed, 5 Mar 2014 14:54:32 +0100 Subject: [PATCH 3/4] clk: shmobile: add CPG driver for rz-platforms In-Reply-To: <2207635.bd10VfTU6U@avalon> References: <1393621768-12568-1-git-send-email-wsa@the-dreams.de> <1722697.3h0GnbWuD3@avalon> <20140303162731.GA3732@katana> <2207635.bd10VfTU6U@avalon> Message-ID: <20140305135431.GA7985@katana> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org > > > While the parent is indeed selected at boot time only, and only one parent > > > is thus needed, parent selection could be performed by a DIP switch > > > connected to MD_CLK on the board for instance. In that case both parents > > > should be available in DT, as selection will be done by the kernel at > > > boot time, not at DT compile time. > > > > OK, I understand the case. I still wonder about specifying two parents, > > though. If a board uses USB_X1, it then has to spefify a dummy EXTAL > > clock (or an empty one), just because USB_X1 is enumerated as second > > entry? > > That's a good question. Mike, would it be possible to support "holes" in the > DT clocks lists, like the GPIO DT bindings do ? I talked to Magnus and we decided to start with hardcoded EXTAL for now, and leave USB_X1 support for in incremental patch when this is actually needed. Note that the devkit will most likely be the only board ever with a selectable root clock. -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 836 bytes Desc: Digital signature URL: