# SPDX-License-Identifier: (GPL-2.0)
%YAML 1.2
---
$id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-emc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: NVIDIA Tegra30 SoC External Memory Controller
maintainers:
- Dmitry Osipenko <digetx@gmail.com>
- Jon Hunter <jonathanh@nvidia.com>
- Thierry Reding <thierry.reding@gmail.com>
description: |
The EMC interfaces with the off-chip SDRAM to service the request stream
sent from Memory Controller. The EMC also has various performance-affecting
settings beyond the obvious SDRAM configuration parameters and initialization
settings. Tegra30 EMC supports multiple JEDEC standard protocols: LPDDR2,
LPDDR3, and DDR3.
properties:
compatible:
const: nvidia,tegra30-emc
reg:
maxItems: 1
clocks:
maxItems: 1
interrupts:
maxItems: 1
nvidia,memory-controller:
$ref: /schemas/types.yaml#/definitions/phandle
description:
Phandle of the Memory Controller node.
patternProperties:
"^emc-timings-[0-9]+$":
type: object
properties:
nvidia,ram-code:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Value of RAM_CODE this timing set is used for.
patternProperties:
"^timing-[0-9]+$":
type: object
properties:
clock-frequency:
description:
Memory clock rate in Hz.
minimum: 1000000
maximum: 900000000
nvidia,emc-auto-cal-interval:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Pad calibration interval in microseconds.
minimum: 0
maximum: 2097151
nvidia,emc-mode-1:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Mode Register 1.
nvidia,emc-mode-2:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Mode Register 2.
nvidia,emc-mode-reset:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Mode Register 0.
nvidia,emc-zcal-cnt-long:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Number of EMC clocks to wait before issuing any commands after
sending ZCAL_MRW_CMD.
minimum: 0
maximum: 1023
nvidia,emc-cfg-dyn-self-ref:
type: boolean
description:
Dynamic self-refresh enabled.
nvidia,emc-cfg-periodic-qrst:
type: boolean
description:
FBIO "read" FIFO periodic resetting enabled.
nvidia,emc-configuration:
$ref: /schemas/types.yaml#/definitions/uint32-array
description:
EMC timing characterization data. These are the registers
(see section "18.13.2 EMC Registers" in the TRM) whose values
need to be specified, according to the board documentation.
items:
- description: EMC_RC
- description: EMC_RFC
- description: EMC_RAS
- description: EMC_RP
- description: EMC_R2W
- description: EMC_W2R
- description: EMC_R2P
- description: EMC_W2P
- description: EMC_RD_RCD
- description: EMC_WR_RCD
- description: EMC_RRD
- description: EMC_REXT
- description: EMC_WEXT
- description: EMC_WDV
- description: EMC_QUSE
- description: EMC_QRST
- description: EMC_QSAFE
- description: EMC_RDV
- description: EMC_REFRESH
- description: EMC_BURST_REFRESH_NUM
- description: EMC_PRE_REFRESH_REQ_CNT
- description: EMC_PDEX2WR
- description: EMC_PDEX2RD
- description: EMC_PCHG2PDEN
- description: EMC_ACT2PDEN
- description: EMC_AR2PDEN
- description: EMC_RW2PDEN
- description: EMC_TXSR
- description: EMC_TXSRDLL
- description: EMC_TCKE
- description: EMC_TFAW
- description: EMC_TRPAB
- description: EMC_TCLKSTABLE
- description: EMC_TCLKSTOP
- description: EMC_TREFBW
- description: EMC_QUSE_EXTRA
- description: EMC_FBIO_CFG6
- description: EMC_ODT_WRITE
- description: EMC_ODT_READ
- description: EMC_FBIO_CFG5
- description: EMC_CFG_DIG_DLL
- description: EMC_CFG_DIG_DLL_PERIOD
- description: EMC_DLL_XFORM_DQS0
- description: EMC_DLL_XFORM_DQS1
- description: EMC_DLL_XFORM_DQS2
- description: EMC_DLL_XFORM_DQS3
- description: EMC_DLL_XFORM_DQS4
- description: EMC_DLL_XFORM_DQS5
- description: EMC_DLL_XFORM_DQS6
- description: EMC_DLL_XFORM_DQS7
- description: EMC_DLL_XFORM_QUSE0
- description: EMC_DLL_XFORM_QUSE1
- description: EMC_DLL_XFORM_QUSE2
- description: EMC_DLL_XFORM_QUSE3
- description: EMC_DLL_XFORM_QUSE4
- description: EMC_DLL_XFORM_QUSE5
- description: EMC_DLL_XFORM_QUSE6
- description: EMC_DLL_XFORM_QUSE7
- description: EMC_DLI_TRIM_TXDQS0
- description: EMC_DLI_TRIM_TXDQS1
- description: EMC_DLI_TRIM_TXDQS2
- description: EMC_DLI_TRIM_TXDQS3
- description: EMC_DLI_TRIM_TXDQS4
- description: EMC_DLI_TRIM_TXDQS5
- description: EMC_DLI_TRIM_TXDQS6
- description: EMC_DLI_TRIM_TXDQS7
- description: EMC_DLL_XFORM_DQ0
- description: EMC_DLL_XFORM_DQ1
- description: EMC_DLL_XFORM_DQ2
- description: EMC_DLL_XFORM_DQ3
- description: EMC_XM2CMDPADCTRL
- description: EMC_XM2DQSPADCTRL2
- description: EMC_XM2DQPADCTRL2
- description: EMC_XM2CLKPADCTRL
- description: EMC_XM2COMPPADCTRL
- description: EMC_XM2VTTGENPADCTRL
- description: EMC_XM2VTTGENPADCTRL2
- description: EMC_XM2QUSEPADCTRL
- description: EMC_XM2DQSPADCTRL3
- description: EMC_CTT_TERM_CTRL
- description: EMC_ZCAL_INTERVAL
- description: EMC_ZCAL_WAIT_CNT
- description: EMC_MRS_WAIT_CNT
- description: EMC_AUTO_CAL_CONFIG
- description: EMC_CTT
- description: EMC_CTT_DURATION
- description: EMC_DYN_SELF_REF_CONTROL
- description: EMC_FBIO_SPARE
- description: EMC_CFG_RSV
required:
- clock-frequency
- nvidia,emc-auto-cal-interval
- nvidia,emc-mode-1
- nvidia,emc-mode-2
- nvidia,emc-mode-reset
- nvidia,emc-zcal-cnt-long
- nvidia,emc-configuration
additionalProperties: false
required:
- nvidia,ram-code
additionalProperties: false
required:
- compatible
- reg
- interrupts
- clocks
- nvidia,memory-controller
additionalProperties: false
examples:
- |
external-memory-controller@7000f400 {
compatible = "nvidia,tegra30-emc";
reg = <0x7000f400 0x400>;
interrupts = <0 78 4>;
clocks = <&tegra_car 57>;
nvidia,memory-controller = <&mc>;
emc-timings-1 {
nvidia,ram-code = <1>;
timing-667000000 {
clock-frequency = <667000000>;
nvidia,emc-auto-cal-interval = <0x001fffff>;
nvidia,emc-mode-1 = <0x80100002>;
nvidia,emc-mode-2 = <0x80200018>;
nvidia,emc-mode-reset = <0x80000b71>;
nvidia,emc-zcal-cnt-long = <0x00000040>;
nvidia,emc-cfg-periodic-qrst;
nvidia,emc-configuration = <
0x00000020 /* EMC_RC */
0x0000006a /* EMC_RFC */
0x00000017 /* EMC_RAS */
0x00000007 /* EMC_RP */
0x00000005 /* EMC_R2W */
0x0000000c /* EMC_W2R */
0x00000003 /* EMC_R2P */
0x00000011 /* EMC_W2P */
0x00000007 /* EMC_RD_RCD */
0x00000007 /* EMC_WR_RCD */
0x00000002 /* EMC_RRD */
0x00000001 /* EMC_REXT */
0x00000000 /* EMC_WEXT */
0x00000007 /* EMC_WDV */
0x0000000a /* EMC_QUSE */
0x00000009 /* EMC_QRST */
0x0000000b /* EMC_QSAFE */
0x00000011 /* EMC_RDV */
0x00001412 /* EMC_REFRESH */
0x00000000 /* EMC_BURST_REFRESH_NUM */
0x00000504 /* EMC_PRE_REFRESH_REQ_CNT */
0x00000002 /* EMC_PDEX2WR */
0x0000000e /* EMC_PDEX2RD */
0x00000001 /* EMC_PCHG2PDEN */
0x00000000 /* EMC_ACT2PDEN */
0x0000000c /* EMC_AR2PDEN */
0x00000016 /* EMC_RW2PDEN */
0x00000072 /* EMC_TXSR */
0x00000200 /* EMC_TXSRDLL */
0x00000005 /* EMC_TCKE */
0x00000015 /* EMC_TFAW */
0x00000000 /* EMC_TRPAB */
0x00000006 /* EMC_TCLKSTABLE */
0x00000007 /* EMC_TCLKSTOP */
0x00001453 /* EMC_TREFBW */
0x0000000b /* EMC_QUSE_EXTRA */
0x00000006 /* EMC_FBIO_CFG6 */
0x00000000 /* EMC_ODT_WRITE */
0x00000000 /* EMC_ODT_READ */
0x00005088 /* EMC_FBIO_CFG5 */
0xf00b0191 /* EMC_CFG_DIG_DLL */
0x00008000 /* EMC_CFG_DIG_DLL_PERIOD */
0x00000008 /* EMC_DLL_XFORM_DQS0 */
0x00000008 /* EMC_DLL_XFORM_DQS1 */
0x00000008 /* EMC_DLL_XFORM_DQS2 */
0x00000008 /* EMC_DLL_XFORM_DQS3 */
0x0000000a /* EMC_DLL_XFORM_DQS4 */
0x0000000a /* EMC_DLL_XFORM_DQS5 */
0x0000000a /* EMC_DLL_XFORM_DQS6 */
0x0000000a /* EMC_DLL_XFORM_DQS7 */
0x00018000 /* EMC_DLL_XFORM_QUSE0 */
0x00018000 /* EMC_DLL_XFORM_QUSE1 */
0x00018000 /* EMC_DLL_XFORM_QUSE2 */
0x00018000 /* EMC_DLL_XFORM_QUSE3 */
0x00000000 /* EMC_DLL_XFORM_QUSE4 */
0x00000000 /* EMC_DLL_XFORM_QUSE5 */
0x00000000 /* EMC_DLL_XFORM_QUSE6 */
0x00000000 /* EMC_DLL_XFORM_QUSE7 */
0x00000000 /* EMC_DLI_TRIM_TXDQS0 */
0x00000000 /* EMC_DLI_TRIM_TXDQS1 */
0x00000000 /* EMC_DLI_TRIM_TXDQS2 */
0x00000000 /* EMC_DLI_TRIM_TXDQS3 */
0x00000000 /* EMC_DLI_TRIM_TXDQS4 */
0x00000000 /* EMC_DLI_TRIM_TXDQS5 */
0x00000000 /* EMC_DLI_TRIM_TXDQS6 */
0x00000000 /* EMC_DLI_TRIM_TXDQS7 */
0x0000000a /* EMC_DLL_XFORM_DQ0 */
0x0000000a /* EMC_DLL_XFORM_DQ1 */
0x0000000a /* EMC_DLL_XFORM_DQ2 */
0x0000000a /* EMC_DLL_XFORM_DQ3 */
0x000002a0 /* EMC_XM2CMDPADCTRL */
0x0800013d /* EMC_XM2DQSPADCTRL2 */
0x22220000 /* EMC_XM2DQPADCTRL2 */
0x77fff884 /* EMC_XM2CLKPADCTRL */
0x01f1f501 /* EMC_XM2COMPPADCTRL */
0x07077404 /* EMC_XM2VTTGENPADCTRL */
0x54000000 /* EMC_XM2VTTGENPADCTRL2 */
0x080001e8 /* EMC_XM2QUSEPADCTRL */
0x0c000021 /* EMC_XM2DQSPADCTRL3 */
0x00000802 /* EMC_CTT_TERM_CTRL */
0x00020000 /* EMC_ZCAL_INTERVAL */
0x00000100 /* EMC_ZCAL_WAIT_CNT */
0x0155000c /* EMC_MRS_WAIT_CNT */
0xa0f10000 /* EMC_AUTO_CAL_CONFIG */
0x00000000 /* EMC_CTT */
0x00000000 /* EMC_CTT_DURATION */
0x800028a5 /* EMC_DYN_SELF_REF_CONTROL */
0xe8000000 /* EMC_FBIO_SPARE */
0xff00ff49 /* EMC_CFG_RSV */
>;
};
};
};
