Lines Matching +full:ast2500 +full:- +full:scu

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
21  * read-only).
23  * SoC Multi-function Pin Expression Examples
24  * ------------------------------------------
26  * Here are some sample mux configurations from the AST2400 and AST2500
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38  * C5 is a multi-signal pin (high and low priority signals). Here we touch
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45  * E19 is a single-signal pin with two functions that influence the active
46  * signal. In this case both bits have the same meaning - enable a dedicated
48  * OR-relationship have the same meaning.
50  * -----+---------+-----------+-----------------------------+-----------+---------------+----------
52  * -----+---------+-----------+-----------------------------+-----------+---------------+----------
54  * For example, pin B19 has a low-priority signal that's enabled by two
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74 …* -----+---------+-----------+-----------------------------------------+-----------+--------------…
79  * Pin T5 is a multi-signal pin with a more complex configuration:
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84  * -----+---------+-----------+------------------------------+-----------+---------------+----------
94  * Re-writing:
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106  * Other video-input-related pins require an explicit state in SCU90[5:4], e.g.
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119  * signals are required. However, this isn't done consistently - UART1 is
120  * enabled on a per-pin basis, and by contrast, all signals for UART6 are
134 …* -----+------------+-----------+---------------------------+-----------+---------------+---------…
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139  * A12 demonstrates that the "Other" signal isn't always GPIO - in this case
140  * GPIOT0 is a high-priority signal and RGMII1TXCK is Other. Thus, GPIO
144  * pins in the function's group to disable the higher-priority signals such
147  * Finally, three priority levels aren't always enough; the AST2500 brings with
184  * * GPIO is configured per-pin
214  * --------------
227  * --------------
238  * 1. Use a data-driven solution rather than embedding state into code
254  * Here's a complete, concrete "pre-processed" example of the table structures
457  *            associated expression. For pin-specific GPIO, the function
491  * Short-hand macro for describing an SCU descriptor enabled by the state of
504  * A further short-hand macro expanding to an SCU descriptor enabled by a set
565  * For example, the 16-bit ROM bus can be enabled by one of two possible signal
591  * to exist for a signal without intrusive side-effects on defining the list of
600  * A short-hand macro for declaring a function expression and an expression
699  * Declare a two-signal pin
818 	return ctx->ops->set(ctx, expr, enabled);  in aspeed_sig_expr_set()