From: Rob Herring <robh@kernel.org>
To: Neil Armstrong <narmstrong@baylibre.com>
Cc: khilman@baylibre.com, devicetree@vger.kernel.org,
linux-amlogic@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, martin.blumenstingl@googlemail.com
Subject: Re: [PATCH 1/2] dt-bindings: amlogic: Add support for GXL S805X and the P241 board
Date: Mon, 16 Jul 2018 16:04:35 -0600 [thread overview]
Message-ID: <20180716220435.GA22633@rob-hp-laptop> (raw)
In-Reply-To: <1530784243-20823-2-git-send-email-narmstrong@baylibre.com>
On Thu, Jul 05, 2018 at 11:50:42AM +0200, Neil Armstrong wrote:
> The S805X is a variant of the Amlogic Meson GXL SoC family with the
> following physical limitations :
> - No SDCard interface
> - No GPIOCLK pins
> - No USB OTG ID pin (but Gadget feature can stil be forced)
> - No 5V regulator
> - Reduced ADC inputs (only ADC0 and ADC1)
> - GPIODV_26, GPIOAO_3, GPIOAO_4, GPIOAO_5, GPIOAO_6, GPIOX_14,
> GPIOX_15, GPIOH_3 are no more exposed on the package
>
> Amlogic exposes the following SW limitations :
> - HDMI max resolution should be 1080p60, VPU clock should be downgraded
> - Video Decoding should be limited to 1080p60, VDEC clock should be downgraded
> - CPU speed should be limited by SCPI OPP table to 1.2GHz
> - DRAM interface is limited to DDR4 16bit up to 1GiB
>
> Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
> ---
> Documentation/devicetree/bindings/arm/amlogic.txt | 6 ++++++
> 1 file changed, 6 insertions(+)
Reviewed-by: Rob Herring <robh@kernel.org>
next prev parent reply other threads:[~2018-07-16 22:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-05 9:50 [PATCH 0/2] Add support for S805X based P241 Reference Design board Neil Armstrong
2018-07-05 9:50 ` [PATCH 1/2] dt-bindings: amlogic: Add support for GXL S805X and the P241 board Neil Armstrong
2018-07-16 22:04 ` Rob Herring [this message]
2018-07-05 9:50 ` [PATCH 2/2] ARM64: dts: add S805X based " Neil Armstrong
2018-07-06 14:46 ` [PATCH 0/2] Add support for S805X based P241 Reference Design board Jerome Brunet
2018-07-09 22:48 ` Kevin Hilman
2018-07-11 7:57 ` Neil Armstrong
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