On 01/21/2014 01:47 PM, Christoph Fritz wrote:
> This patch adds file omap37xx100.dtsi which includs a SoC specific table
> for CPU OPP.
>
> Please keep in mind that am/dm37xx100 variants differ from am/dm37xx
> SoCs without nomenclature marker prefix "100". This marker indicates
> the maximum cpu frequency. 100 stands for 1 GHz-Cortex-A8, blank means
> maximum 800 MHz.
>
> For more info, see Datasheet http://www.ti.com/lit/ds/sprs685d/sprs685d.pdf
> section 7.2.1 "Device and Development-Support Tool Nomenclature".
>
> Signed-off-by: Christoph Fritz <[email protected]>
> ---
> arch/arm/boot/dts/omap37xx100.dtsi | 44
> ++++++++++++++++++++++++++++++++++++
> 1 file changed, 44 insertions(+)
> create mode 100644 arch/arm/boot/dts/omap37xx100.dtsi
>
> diff --git a/arch/arm/boot/dts/omap37xx100.dtsi
> b/arch/arm/boot/dts/omap37xx100.dtsi
> new file mode 100644
> index 0000000..064661e
> --- /dev/null
> +++ b/arch/arm/boot/dts/omap37xx100.dtsi
> @@ -0,0 +1,44 @@
> +/*
> + * Device Tree Source for OMAP37x SoC
> + *
> + * This file is licensed under the terms of the GNU General Public License
> + * version 2. This program is licensed "as is" without any warranty of any
> + * kind, whether express or implied.
> + */
> +
> +#include "omap3.dtsi"
> +
> +/ {
> + aliases {
> + serial3 = &uart4;
> + };
> +
> + cpus {
> + /* AM/DM37xx */
> + cpu@0 {
> + operating-points = <
> + /* kHz uV */
> + 125000 975000
> + 250000 1075000
> + 500000 1100000
> + 600000 1140000
> + 800000 1270000
> + 1000000 1380000
This is valid even for 3630/DM3730 as well -> unfortunately - you
cannot enable 1GHz without enabling ABB and AVS 1.5.
There is a bunch of internal discussion with respect to lack of this
information available.. but as it stands right now, I dont think this
is valid.
> + >;
> + clock-latency = <300000>; /* From legacy driver */
> + };
> + };
> +
> + ocp {
> + /* uart4 is only available on CBP and CBC packages */
> + uart4: serial@49042000 {
> + compatible = "ti,omap3-uart";
> + reg = <0x49042000 0x400>;
> + interrupts = <80>;
> + dmas = <&sdma 81 &sdma 82>;
> + dma-names = "tx", "rx";
> + ti,hwmods = "uart4";
> + clock-frequency = <48000000>;
> + };
> + };
> +};
>
Further, we should be able to reuse 3630.dtsi for this.
--
Regards,
Nishanth Menon
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