Hi,
thanks for putting me on CC.
Am Freitag, 8. November 2024, 03:27:02 CET schrieb Pengfei Li:
> The i.MX 91 family features an Arm Cortex-A55 running at up to
> 1.4GHz, support for modern LPDDR4 memory to enable platform longevity,
> along with a rich set of peripherals targeting medical, industrial
> and consumer IoT market segments.
>
> The design of the i.MX91 platform is very similar to i.MX93.
> The mainly difference between i.MX91 and i.MX93 is as follows:
> - i.MX91 removed some clocks and modified the names of some clocks.
> - i.MX91 only has one A core
>
> Signed-off-by: Pengfei Li <pengfei.li_1@xxxxxxx>
> Reviewed-by: Frank Li <Frank.Li@xxxxxxx>
> ---
> arch/arm64/boot/dts/freescale/imx91-pinfunc.h | 770 ++++++++++++++++++
> arch/arm64/boot/dts/freescale/imx91.dtsi | 66 ++
> 2 files changed, 836 insertions(+)
> create mode 100644 arch/arm64/boot/dts/freescale/imx91-pinfunc.h
> create mode 100644 arch/arm64/boot/dts/freescale/imx91.dtsi
>
> diff --git a/arch/arm64/boot/dts/freescale/imx91-pinfunc.h b/arch/arm64/boot/dts/freescale/imx91-pinfunc.h
> new file mode 100644
> index 000000000000..bc58ce2102b2
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx91-pinfunc.h
FWIW this is a 1:1 copy from downstream kernel
> diff --git a/arch/arm64/boot/dts/freescale/imx91.dtsi b/arch/arm64/boot/dts/freescale/imx91.dtsi
> new file mode 100644
> index 000000000000..a9f4c1fe61cc
> --- /dev/null
> +++ b/arch/arm64/boot/dts/freescale/imx91.dtsi
> @@ -0,0 +1,66 @@
> +// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
> +/*
> + * Copyright 2024 NXP
> + */
> +
> +#include "imx91-pinfunc.h"
> +#include "imx93.dtsi"
> +
> +&{/thermal-zones/cpu-thermal/cooling-maps/map0} {
> + cooling-device =
> + <&A55_0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> +};
> +
> +&clk {
> + compatible = "fsl,imx91-ccm";
> +};
> +
> +&eqos {
> + clocks = <&clk IMX91_CLK_ENET1_QOS_TSN_GATE>,
> + <&clk IMX91_CLK_ENET1_QOS_TSN_GATE>,
> + <&clk IMX91_CLK_ENET_TIMER>,
> + <&clk IMX91_CLK_ENET1_QOS_TSN>,
> + <&clk IMX91_CLK_ENET1_QOS_TSN_GATE>;
> + assigned-clocks = <&clk IMX91_CLK_ENET_TIMER>,
> + <&clk IMX91_CLK_ENET1_QOS_TSN>;
> + assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>,
> + <&clk IMX93_CLK_SYS_PLL_PFD0_DIV2>;
Is it just me or is the alignment of new lines not matching?
> +};
> +
> +&fec {
> + clocks = <&clk IMX91_CLK_ENET2_REGULAR_GATE>,
> + <&clk IMX91_CLK_ENET2_REGULAR_GATE>,
> + <&clk IMX91_CLK_ENET_TIMER>,
> + <&clk IMX91_CLK_ENET2_REGULAR>,
> + <&clk IMX93_CLK_DUMMY>;
> + assigned-clocks = <&clk IMX91_CLK_ENET_TIMER>,
> + <&clk IMX91_CLK_ENET2_REGULAR>;
> + assigned-clock-parents = <&clk IMX93_CLK_SYS_PLL_PFD1_DIV2>,
> + <&clk IMX93_CLK_SYS_PLL_PFD0_DIV2>;
Here as well: Is it just me or is the alignment of new lines not matching?
> + assigned-clock-rates = <100000000>, <250000000>;
> +};
> +
> +&i3c1 {
> + clocks = <&clk IMX93_CLK_BUS_AON>,
> + <&clk IMX93_CLK_I3C1_GATE>,
> + <&clk IMX93_CLK_DUMMY>;
> +};
> +
> +&i3c2 {
> + clocks = <&clk IMX93_CLK_BUS_WAKEUP>,
> + <&clk IMX93_CLK_I3C2_GATE>,
> + <&clk IMX93_CLK_DUMMY>;
> +};
> +
> +&tmu {
> + status = "disabled";
Why does the TMU needs to be disabled instead of deleted?
> +};
> +
> +/* i.MX91 only has one A core */
> +/delete-node/ &A55_1;
> +
> +/* i.MX91 not has cm33 */
> +/delete-node/ &cm33;
> +
> +/* i.MX91 not has power-domain@44461800 */
> +/delete-node/ &mlmix;
>
Shouldn't the following node also be removed?
* mipi_csi
* dsi
* lvds_bridge
* lcdif_to_dsi
* lcdif_to_ldb
Also in downstream kernel IMX91_CLK_MEDIA_AXI, which is IMX93_CLK_MEDIA_AXI
upstream, is set to 200 MHz. Is this applicable here as well?
Best regards,
Alexander
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