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/Linux-v5.15/drivers/memory/tegra/
Dtegra20-emc.c1 // SPDX-License-Identifier: GPL-2.0
13 #include <linux/interconnect-provider.h>
90 #define EMC_CLKCHANGE_PD_ENABLE BIT(1)
99 #define EMC_DBG_WRITE_MUX_ACTIVE BIT(1)
106 #define EMC_PWR_GATHER_CLEAR (1 << 8)
185 struct emc_timing *timings; member
195 * There are multiple sources in the EMC driver which could request
200 /* protect shared rate-change code path */
208 struct tegra_emc *emc = data; in tegra_emc_isr() local
212 status = readl_relaxed(emc->regs + EMC_INTSTATUS) & intmask; in tegra_emc_isr()
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Dtegra30-emc.c1 // SPDX-License-Identifier: GPL-2.0+
5 * Based on downstream driver from NVIDIA and tegra124-emc.c
6 * Copyright (C) 2011-2014 NVIDIA Corporation
9 * Copyright (C) 2019 GRATE-DRIVER project
17 #include <linux/interconnect-provider.h>
156 ((num) > 1 ? DRAM_DEV_SEL_ALL : DRAM_DEV_SEL_0)
166 #define EMC_DBG_WRITE_MUX_ACTIVE BIT(1)
197 (((num) > 1 ? 0 : 2) | EMC_REFCTRL_ENABLE)
198 #define EMC_REFCTRL_DISABLE_ALL(num) ((num) > 1 ? 0 : 2)
204 #define EMC_CLKCHANGE_PD_ENABLE BIT(1)
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Dtegra210-emc-core.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015-2020, NVIDIA CORPORATION. All rights reserved.
21 #include "tegra210-emc.h"
22 #include "tegra210-mc.h"
44 #define PLLM_VCOB 1
62 next->trim_regs[EMC_PMACRO_OB_DDLL_LONG_DQ_RANK ## \
69 next->trim_perch_regs[EMC ## chan ## \
80 ((new[n + 1] << EMC_PMACRO_OB_DDLL_LONG_DQ_RANK ## rank ## _ ##\
522 { .bank = 1, .offset = EMC_MRW10, },
524 { .bank = 1, .offset = EMC_MRW11, },
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Dtegra124-emc.c1 // SPDX-License-Identifier: GPL-2.0-only
9 #include <linux/clk-provider.h>
15 #include <linux/interconnect-provider.h>
271 #define EMC_BGBIAS_CTL0_BIAS0_DSC_E_PWRD BIT(1)
281 #define EMC_REFCTRL_DEV_SEL(n) (((n > 1) ? 0 : 2) << EMC_REFCTRL_DEV_SEL_SHIFT)
282 #define EMC_DRAM_DEV_SEL(n) ((n > 1) ? DRAM_DEV_SEL_ALL : DRAM_DEV_SEL_0)
289 DRAM_TYPE_DDR1 = 1,
495 struct emc_timing *timings; member
507 * There are multiple sources in the EMC driver which could request
512 /* protect shared rate-change code path */
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Dtegra210-emc.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (c) 2015-2020, NVIDIA CORPORATION. All rights reserved.
24 #define EMC_DBG_WRITE_MUX_ACTIVE BIT(1)
33 #define EMC_PIN_PIN_CKEB BIT(1)
143 #define EMC_CFG_DIG_DLL_CFG_DLL_STALL_ALL_UNTIL_LOCK BIT(1)
175 #define EMC_ZQ_CAL_ZQ_LATCH_CMD BIT(1)
197 #define EMC_CCFIFO_ADDR_STALL_BY_1 (1 << 31)
243 #define EMC_FBIO_CFG7_CH0_ENABLE BIT(1)
653 #define EMC_PMACRO_CMD_PAD_TX_CTRL_CMD_DQ_TX_E_DCC BIT(1)
661 #define EMC_PMACRO_DATA_PAD_TX_CTRL_DATA_DQ_TX_E_DCC BIT(1)
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Dmc.c1 // SPDX-License-Identifier: GPL-2.0-only
8 #include <linux/dma-mapping.h>
25 { .compatible = "nvidia,tegra20-mc-gart", .data = &tegra20_mc_soc },
28 { .compatible = "nvidia,tegra30-mc", .data = &tegra30_mc_soc },
31 { .compatible = "nvidia,tegra114-mc", .data = &tegra114_mc_soc },
34 { .compatible = "nvidia,tegra124-mc", .data = &tegra124_mc_soc },
37 { .compatible = "nvidia,tegra132-mc", .data = &tegra132_mc_soc },
40 { .compatible = "nvidia,tegra210-mc", .data = &tegra210_mc_soc },
43 { .compatible = "nvidia,tegra186-mc", .data = &tegra186_mc_soc },
46 { .compatible = "nvidia,tegra194-mc", .data = &tegra194_mc_soc },
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/Linux-v5.15/Documentation/devicetree/bindings/memory-controllers/
Dnvidia,tegra124-emc.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra124-emc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Thierry Reding <thierry.reding@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
14 The EMC interfaces with the off-chip SDRAM to service the request stream
19 const: nvidia,tegra124-emc
22 maxItems: 1
26 - description: external memory clock
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Dnvidia,tegra30-emc.yaml1 # SPDX-License-Identifier: (GPL-2.0)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-emc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
15 The EMC interfaces with the off-chip SDRAM to service the request stream
16 sent from Memory Controller. The EMC also has various performance-affecting
18 settings. Tegra30 EMC supports multiple JEDEC standard protocols: LPDDR2,
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Dnvidia,tegra124-mc.yaml1 # SPDX-License-Identifier: (GPL-2.0)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra124-mc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jon Hunter <jonathanh@nvidia.com>
11 - Thierry Reding <thierry.reding@gmail.com>
14 Tegra124 SoC features a hybrid 2x32-bit / 1x64-bit memory controller.
22 const: nvidia,tegra124-mc
25 maxItems: 1
28 maxItems: 1
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Dnvidia,tegra30-mc.yaml1 # SPDX-License-Identifier: (GPL-2.0)
3 ---
4 $id: http://devicetree.org/schemas/memory-controllers/nvidia,tegra30-mc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Dmitry Osipenko <digetx@gmail.com>
11 - Jon Hunter <jonathanh@nvidia.com>
12 - Thierry Reding <thierry.reding@gmail.com>
39 const: nvidia,tegra30-mc
42 maxItems: 1
45 maxItems: 1
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/Linux-v5.15/drivers/clk/tegra/
Dclk-tegra124-emc.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * drivers/clk/tegra/clk-emc.c
11 #include <linux/clk-provider.h>
47 * List of clock sources for various parents the EMC clock can have.
54 #define EMC_SRC_PLL_C 1
79 struct tegra_emc *emc; member
82 struct emc_timing *timings; member
105 val = readl(tegra->clk_regs + CLK_SOURCE_EMC); in emc_recalc_rate()
113 * safer since things have EMC rate floors. Also don't touch parent_rate
125 for (k = 0; k < tegra->num_timings; k++) { in emc_determine_rate()
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Dclk-tegra210-emc.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2015-2020, NVIDIA CORPORATION. All rights reserved.
8 #include <linux/clk-provider.h>
23 #define CLK_SRC_PLLC 1
53 struct tegra210_clk_emc *emc = to_tegra210_clk_emc(hw); in tegra210_clk_emc_get_parent() local
57 value = readl_relaxed(emc->regs + CLK_SOURCE_EMC); in tegra210_clk_emc_get_parent()
66 struct tegra210_clk_emc *emc = to_tegra210_clk_emc(hw); in tegra210_clk_emc_recalc_rate() local
71 * ->set_rate(), so the parent rate passed in here was cached from the in tegra210_clk_emc_recalc_rate()
72 * parent before the ->set_rate() call. in tegra210_clk_emc_recalc_rate()
74 * This can lead to wrong results being reported for the EMC clock if in tegra210_clk_emc_recalc_rate()
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/Linux-v5.15/arch/arm/boot/dts/
Dtegra30-asus-nexus7-tilapia-memory-timings.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 #include "tegra30-asus-nexus7-grouper-memory-timings.dtsi"
7 * Tilapia's memory timings are pretty much the same as the Grouper's
9 * these differentiating timings are overridden here for Tilapia.
12 memory-controller@7000f400 {
13 emc-timings-0 {
14 timing-667000000 {
15 clock-frequency = <667000000>;
17 nvidia,emc-auto-cal-interval = <0x001fffff>;
18 nvidia,emc-mode-1 = <0x80100002>;
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Dtegra124-nyan-blaze-emc.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 emc-timings-1 {
5 nvidia,ram-code = <1>;
7 timing-12750000 {
8 clock-frequency = <12750000>;
9 nvidia,parent-clock-frequency = <408000000>;
11 clock-names = "emc-parent";
13 timing-20400000 {
14 clock-frequency = <20400000>;
15 nvidia,parent-clock-frequency = <408000000>;
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Dtegra124-apalis-emc.dtsi1 // SPDX-License-Identifier: GPL-2.0 OR X11
3 * Copyright 2016-2019 Toradex AG
9 emc-timings-1 {
10 nvidia,ram-code = <1>;
12 timing-12750000 {
13 clock-frequency = <12750000>;
14 nvidia,parent-clock-frequency = <408000000>;
16 clock-names = "emc-parent";
18 timing-20400000 {
19 clock-frequency = <20400000>;
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Dtegra124-jetson-tk1-emc.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 emc-timings-3 {
5 nvidia,ram-code = <3>;
7 timing-12750000 {
8 clock-frequency = <12750000>;
9 nvidia,parent-clock-frequency = <408000000>;
11 clock-names = "emc-parent";
13 timing-20400000 {
14 clock-frequency = <20400000>;
15 nvidia,parent-clock-frequency = <408000000>;
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Dtegra30-asus-nexus7-grouper-memory-timings.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 memory-controller@7000f000 {
5 emc-timings-0 {
6 nvidia,ram-code = <0>; /* Elpida EDJ2108EDBG-DJL-F */
8 timing-25500000 {
9 clock-frequency = <25500000>;
11 nvidia,emem-configuration = <
33 timing-51000000 {
34 clock-frequency = <51000000>;
36 nvidia,emem-configuration = <
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Dtegra30-ouya.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
4 #include <dt-bindings/input/gpio-keys.h>
5 #include <dt-bindings/input/input.h>
6 #include <dt-bindings/thermal/thermal.h>
9 #include "tegra30-cpu-opp.dtsi"
10 #include "tegra30-cpu-opp-microvolt.dtsi"
26 stdout-path = "serial0:115200n8";
33 reserved-memory {
34 #address-cells = <1>;
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Dtegra124-nyan-big-emc.dtsi1 // SPDX-License-Identifier: GPL-2.0
4 nvidia,long-ram-code;
8 emc-timings-1 {
9 nvidia,ram-code = <1>;
11 timing-12750000 {
12 clock-frequency = <12750000>;
13 nvidia,parent-clock-frequency = <408000000>;
15 clock-names = "emc-parent";
17 timing-20400000 {
18 clock-frequency = <20400000>;
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/Linux-v5.15/Documentation/devicetree/bindings/clock/
Dnvidia,tegra124-car.yaml1 # SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/clock/nvidia,tegra124-car.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Jon Hunter <jonathanh@nvidia.com>
11 - Thierry Reding <thierry.reding@gmail.com>
30 const: nvidia,tegra124-car
33 maxItems: 1
35 '#clock-cells':
36 const: 1
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