From mboxrd@z Thu Jan 1 00:00:00 1970 From: sudeep.holla@arm.com (Sudeep Holla) Date: Wed, 28 Oct 2015 10:54:58 +0000 Subject: [PATCH] ARM64: juno: disable NOR flash node by default In-Reply-To: <1446025195-9264-1-git-send-email-linus.walleij@linaro.org> References: <1446025195-9264-1-git-send-email-linus.walleij@linaro.org> Message-ID: <5630A982.5080505@arm.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On 28/10/15 09:39, Linus Walleij wrote: > After discussing on the mailing list it turns out that > accessing the flash memory from the kernel can disrupt CPU > sleep states and CPU hotplugging, so let's disable this > DT node by default. Setups that want to access the flash > can modify this entry to enable the flash again. > > Quoting Sudeep Holla: "the firmware assumes the flash is > always in read mode while Linux leaves NOR flash in > "read id" mode after initialization." > > Reported-by: Sudeep Holla > Cc: Mark Rutland > Cc: Sudeep Holla Thanks for the patch. I too wrote one last night after I found NOR flash was added in arm-soc -next. Acked-by: Sudeep Holla -- Regards, Sudeep