From mboxrd@z Thu Jan 1 00:00:00 1970 From: hdegoede@redhat.com (Hans de Goede) Date: Sat, 30 Jul 2016 16:25:40 +0200 Subject: [PATCH 2/4] mmc: sunxi: Make sample clocks optional In-Reply-To: <20160725081830.GF7419@lukather> References: <1468665964-27142-1-git-send-email-hdegoede@redhat.com> <1468665964-27142-3-git-send-email-hdegoede@redhat.com> <20160725081830.GF7419@lukather> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi, On 25-07-16 10:18, Maxime Ripard wrote: > Hi, > > On Sat, Jul 16, 2016 at 12:46:02PM +0200, Hans de Goede wrote: >> It turns out that sun4i (A10) and sun5i (A13 & co) do not have sample >> clocks, so make them optional. >> >> Since these do not have sample clocks, they cannot (reliably) do >> DDR rates, so only set MMC_CAP_1_8V_DDR when we do have sample clks. >> >> Note this patch only changes the devm_clk_get error checking and sets >> the clocks to NULL if they don't exists. All the clk_foo calls accept >> a NULL clk and will return success when called with a NULL clk, so this >> is all that is necessary. > > The clocks aren't really optional. They're not needed for the A10 / > A13, and mandatory for the A20 and later. > > Having a new compatible for the A20 that would require that clock and > not require it for the A10/A13 anymore seems more appropriate. Ok, I've prepared a new version using a new compatible. Regards, Hans