Thread (20 messages) 20 messages, 4 authors, 2022-09-02

Re: [PATCH v4 3/8] dt-bindings: clock: Add ids for Lynx 10g PLLs

From: Krzysztof Kozlowski <hidden>
Date: 2022-08-09 05:22:01
Also in: linux-arm-kernel, linux-clk, linux-devicetree, linux-phy

On 08/08/2022 18:16, Sean Anderson wrote:
quoted
This entry here is not
parsed for any tools and only sometimes people look at it. The questions
are directed via entry in maintainers file or via git history, so you
can put company email just there.
As I understand it, the email is simply informative. There are literally
hundreds of examples of mixing a "personal" copyright with a company email.
It is easy to find if you grep. If you are so opposed to it, then I will
remove the email and simply use my name.
No, no problem for me.
quoted
quoted
quoted
quoted
+ */
+
+#ifndef __DT_BINDINGS_CLK_LYNX_10G_H
+#define __DT_BINDINGS_CLK_LYNX_10G_H
+
+#define LYNX10G_CLKS_PER_PLL 2
+
+#define LYNX10G_PLLa(a)		((a) * LYNX10G_CLKS_PER_PLL)
+#define LYNX10G_PLLa_EX_DLY(a)	((a) * LYNX10G_CLKS_PER_PLL + 1)
These do not look like proper IDs for clocks for bindings. Numbering
starts from 0 or 1 and any "a" needs to be clearly explained. What do
you bind here?
This matches "a" is the index of the PLL. E.g. registers PLL1RSTCTL etc.
This matches the notation used in the reference manual.
This is a file for bindings, not for storing register values. There is
no single need to store register values (offsets, indexes) as bindings
as it is not appropriate. Therefore if you do not use it as an ID, just
remove the bindings header.
This *is* just for IDs, as stated in the commit message. The above example
was only to illustrate that the clock controlled via the PLL1RSTCTL register
(among others) would have an ID of LYNX10G_PLLa(0).

If you doubt it, review the driver.
Indeed, thanks. Except the driver, where is the DTS user of these
bindings? It's neither in bindings example, nor in the DTS patches.

Best regards,
Krzysztof
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