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dts: arm: nxp: RT10xx/11xx .dtsi Files: Remove flexram,bank-spec prop…
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This commit removes the flexram,bank-spec property from dtsi files.
The property causes flexram to be dynamically configured based on
the configuration in flexram,bank-spec. This is a problem for 2 reasons:
1) The FlexRAM will always be dynamically reconfigured to default
fuse configuration. This is unnecessary if using default fuses.
2) If a user decides to program fuses. The FlexRAM will still be
reconfigured to the default fuse configuration.

Modify description in the binding to show how to use the property at:
dts/bindings/memory-controllers/nxp,flexram.yaml

Added board overlay to mimxrt1170_evk_cm7 magic_addr:
samples/boards/nxp/mimxrt1170_evk_cm7/magic_addr/boards

Signed-off-by: Jacob Wienecke <[email protected]>
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@jacob-wienecke-nxp
jacob-wienecke-nxp committed Feb 18, 2025
1 parent 8f83ffc commit de92e22
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Showing 10 changed files with 57 additions and 97 deletions.
5 changes: 0 additions & 5 deletions dts/arm/nxp/nxp_rt1010.dtsi
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&flexram {
flexram,num-ram-banks = <4>;
/* default fuse */
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>;
};

&sysclk {
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5 changes: 0 additions & 5 deletions dts/arm/nxp/nxp_rt1015.dtsi
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/* Note: RT1015 has five flexram banks, but only 4 of the 5 can
* be used at the same time, for a total of 128KB of RAM.
*/
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>;
};

&sysclk {
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9 changes: 0 additions & 9 deletions dts/arm/nxp/nxp_rt1020.dtsi
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&flexram {
flexram,num-ram-banks = <8>;
/* default fuse */
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>;
};

&sysclk {
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9 changes: 0 additions & 9 deletions dts/arm/nxp/nxp_rt1024.dtsi
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&flexram {
flexram,num-ram-banks = <8>;
/* default fuse */
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>;
};

&sysclk {
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17 changes: 0 additions & 17 deletions dts/arm/nxp/nxp_rt1050.dtsi
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&flexram {
flexram,num-ram-banks = <16>;
/* default fuse */
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>;
};

&ccm {
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17 changes: 0 additions & 17 deletions dts/arm/nxp/nxp_rt1060.dtsi
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};

flexram,num-ram-banks = <16>;
/* default fuse */
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>;
};

&ccm {
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17 changes: 0 additions & 17 deletions dts/arm/nxp/nxp_rt1064.dtsi
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&flexram {
flexram,num-ram-banks = <16>;
/* default fuse */
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>;
};

&flexspi2 {
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17 changes: 0 additions & 17 deletions dts/arm/nxp/nxp_rt11xx_cm7.dtsi
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flexram,bank-size = <32>;
flexram,num-ram-banks = <16>;
flexram,has-magic-addr;
/* same as default fuse value */
flexram,bank-spec = <FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>;

itcm: itcm@0 {
compatible = "zephyr,memory-region", "nxp,imx-itcm";
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39 changes: 38 additions & 1 deletion dts/bindings/memory-controllers/nxp,flexram.yaml
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@@ -1,7 +1,44 @@
# Copyright 2023 NXP
# SPDX-License-Identifier: Apache-2.0

description: NXP FlexRAM on-chip ram controller
description: |
NXP FlexRAM on-chip ram controller
If the flexram,bank-spec property is specified, then the flexram will be
dynamically reconfigured to the configuration specified at runtime. An
example to configure the flexram dynamically using the
flexram,bank-spec property for rt1060 is as follows:
&itcm {
reg = < 0x0 DT_SIZE_K(64) >;
};
&dtcm {
reg = < 0x20000000 DT_SIZE_K(384) >;
};
&ocram {
reg = < 0x20280000 DT_SIZE_K(64) >;
};
&flexram {
flexram,bank-spec = <FLEXRAM_OCRAM>,
<FLEXRAM_OCRAM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>;
};
This will configure the flexram for 384K of DTCM, 64K of ITCM,
and 64K of OCRAM.
include: base.yaml

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19 changes: 19 additions & 0 deletions ...s/boards/nxp/mimxrt1170_evk_cm7/magic_addr/boards/mimxrt1170_evk_mimxrt1176_cm7_A.overlay
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/* default fuse */
&flexram {
flexram,bank-spec = <FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_DTCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>,
<FLEXRAM_ITCM>;
};

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