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/Linux-v5.10/Documentation/devicetree/bindings/dma/
Dsifive,fu540-c000-pdma.yaml1 # SPDX-License-Identifier: GPL-2.0
3 ---
4 $id: http://devicetree.org/schemas/dma/sifive,fu540-c000-pdma.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: SiFive Unleashed Rev C000 Platform DMA
10 - Green Wan <green.wan@sifive.com>
11 - Palmer Debbelt <palmer@sifive.com>
12 - Paul Walmsley <paul.walmsley@sifive.com>
23 https://static.dev.sifive.com/FU540-C000-v1.0.pdf
28 - const: sifive,fu540-c000-pdma
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/Linux-v5.10/arch/riscv/boot/dts/sifive/
Dfu540-c000.dtsi1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
2 /* Copyright (c) 2018-2019 SiFive, Inc */
4 /dts-v1/;
6 #include <dt-bindings/clock/sifive-fu540-prci.h>
9 #address-cells = <2>;
10 #size-cells = <2>;
11 compatible = "sifive,fu540-c000", "sifive,fu540";
23 #address-cells = <1>;
24 #size-cells = <0>;
28 i-cache-block-size = <64>;
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/Linux-v5.10/drivers/dma/sf-pdma/
Dsf-pdma.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * SiFive FU540 Platform DMA driver
7 * - drivers/dma/fsl-edma.c
8 * - drivers/dma/dw-edma/
9 * - drivers/dma/pxa-dma.c
12 * - Chapter 12 "Platform DMA Engine (PDMA)" of
13 * SiFive FU540-C000 v1.0
14 * https://static.dev.sifive.com/FU540-C000-v1.0.pdf
20 #include <linux/dma-direction.h>
23 #include "../virt-dma.h"
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Dsf-pdma.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * SiFive FU540 Platform DMA driver
7 * - drivers/dma/fsl-edma.c
8 * - drivers/dma/dw-edma/
9 * - drivers/dma/pxa-dma.c
12 * - Chapter 12 "Platform DMA Engine (PDMA)" of
13 * SiFive FU540-C000 v1.0
14 * https://static.dev.sifive.com/FU540-C000-v1.0.pdf
21 #include <linux/dma-mapping.h>
25 #include "sf-pdma.h"
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/Linux-v5.10/Documentation/devicetree/bindings/sifive/
Dsifive-blocks-ip-versioning.txt1 DT compatible string versioning for SiFive open-source IP blocks
4 strings for open-source SiFive IP blocks. HDL for these IP blocks
7 https://github.com/sifive/sifive-blocks
9 IP block-specific DT compatible strings are contained within the HDL,
10 in the form "sifive,<ip-block-name><integer version number>".
14 https://github.com/sifive/sifive-blocks/blob/v1.0/src/main/scala/devices/uart/UART.scala#L43
17 auto-discovery, the maintainers of these IP blocks intend to increment
25 upstream sifive-blocks commits. It is expected that most drivers will
26 match on these IP block-specific compatible strings.
29 continue to specify an SoC-specific compatible string value, such as
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/Linux-v5.10/drivers/clk/analogbits/
Dwrpll-cln28hpc.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2018-2019 SiFive, Inc.
16 * pre-determined set of performance points.
19 * - Analog Bits "Wide Range PLL Datasheet", version 2015.10.01
20 * - SiFive FU540-C000 Manual v1p0, Chapter 7 "Clocking and Reset"
21 * https://static.dev.sifive.com/FU540-C000-v1.0.pdf
28 #include <linux/clk/analogbits-wrpll-cln28hpc.h>
36 /* MIN_POST_DIVIDE_REF_FREQ: minimum post-divider reference frequency, in Hz */
39 /* MAX_POST_DIVIDE_REF_FREQ: maximum post-divider reference frequency, in Hz */
68 * __wrpll_calc_filter_range() - determine PLL loop filter bandwidth
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/Linux-v5.10/drivers/pwm/
Dpwm-sifive.c1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2017-2018 SiFive
5 * Reference Manual : https://static.dev.sifive.com/FU540-C000-v1.0.pdf
8 * - When changing both duty cycle and period, we cannot prevent in
11 * - The hardware cannot generate a 100% duty cycle.
12 * - The hardware generates only inverted output.
65 mutex_lock(&ddata->lock); in pwm_sifive_request()
66 ddata->user_count++; in pwm_sifive_request()
67 mutex_unlock(&ddata->lock); in pwm_sifive_request()
76 mutex_lock(&ddata->lock); in pwm_sifive_free()
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/Linux-v5.10/
DMAINTAINERS9 -------------------------
30 ``diff -u`` to make the patch easy to merge. Be prepared to get your
40 See Documentation/process/coding-style.rst for guidance here.
46 See Documentation/process/submitting-patches.rst for details.
57 include a Signed-off-by: line. The current version of this
59 Documentation/process/submitting-patches.rst.
70 that the bug would present a short-term risk to other users if it
76 Documentation/admin-guide/security-bugs.rst for details.
81 ---------------------------------------------------
97 W: *Web-page* with status/info
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