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[RESEND,v7,23/37] dt-bindings: display: sm501 register definition helper

Message ID dac98a697c8e850054f984964af62a209f241c83.1712207606.git.ysato@users.sourceforge.jp
State New
Headers show
Series [RESEND,v7,01/37] sh: passing FDT address to kernel startup. | expand

Commit Message

Yoshinori Sato April 4, 2024, 5:14 a.m. UTC 
Miscellaneous Timing and Miscellaneous Control registers definition.

Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>
---
 include/dt-bindings/display/sm501.h | 76 +++++++++++++++++++++++++++++
 1 file changed, 76 insertions(+)
 create mode 100644 include/dt-bindings/display/sm501.h

Comments

Geert Uytterhoeven April 5, 2024, 1:25 p.m. UTC | #1 
Hi Sato-san,

Thanks for your patch!

On Thu, Apr 4, 2024 at 7:15 AM Yoshinori Sato
<ysato@users.sourceforge.jp> wrote:
> Miscellaneous Timing and Miscellaneous Control registers definition.

Please do not put raw register value definitions into DT bindings.

> Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp>

> --- /dev/null
> +++ b/include/dt-bindings/display/sm501.h

> +/* Miscellaneous timing */
> +#define SM501_MISC_TIMING_EX_HOLD_0    0
> +#define SM501_MISC_TIMING_EX_HOLD_16   1
> +#define SM501_MISC_TIMING_EX_HOLD_32   2
> +#define SM501_MISC_TIMING_EX_HOLD_48   3
> +#define SM501_MISC_TIMING_EX_HOLD_64   4
> +#define SM501_MISC_TIMING_EX_HOLD_80   5
> +#define SM501_MISC_TIMING_EX_HOLD_96   6
> +#define SM501_MISC_TIMING_EX_HOLD_112  7
> +#define SM501_MISC_TIMING_EX_HOLD_128  8
> +#define SM501_MISC_TIMING_EX_HOLD_144  9
> +#define SM501_MISC_TIMING_EX_HOLD_160  10
> +#define SM501_MISC_TIMING_EX_HOLD_176  11
> +#define SM501_MISC_TIMING_EX_HOLD_192  12
> +#define SM501_MISC_TIMING_EX_HOLD_208  13
> +#define SM501_MISC_TIMING_EX_HOLD_224  14
> +#define SM501_MISC_TIMING_EX_HOLD_240  15

E.g. these are used by the (not very descriptive) "ex" property:

     ex:
       $ref: /schemas/types.yaml#/definitions/uint32
       description: Extend bus holding time.

Please instead use an enum for the actual holding time ([ 0, 16, 32,
...]) in the DT bindings, and convert from actual holding time to
register value in the driver.

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds
diff mbox series

Patch

diff --git a/include/dt-bindings/display/sm501.h b/include/dt-bindings/display/sm501.h
new file mode 100644
index 000000000000..a6c6943642e4
--- /dev/null
+++ b/include/dt-bindings/display/sm501.h
@@ -0,0 +1,76 @@ 
+/* SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause */
+#ifndef __DT_BINDING_DISPALY_SM501__
+#define __DT_BINDING_DISPALY_SM501__
+
+/* Miscellaneous Conntrol */
+#define SM501_MISC_CONTROL_PAD_24	0
+#define SM501_MISC_CONTROL_PAD_12	1
+#define SM501_MISC_CONTROL_PAD_8	2
+
+#define SM501_MISC_CONTROL_USBCLK_XTAL	0
+#define SM501_MISC_CONTROL_USBCLK_96MHZ	1
+#define SM501_MISC_CONTROL_USBCLK_48MHZ	2
+
+#define SM501_MISC_CONTROL_RFSH_8US	0
+#define SM501_MISC_CONTROL_RFSH_16US	1
+#define SM501_MISC_CONTROL_RFSH_32US	2
+#define SM501_MISC_CONTROL_RFSH_64US	3
+
+#define SM501_MISC_CONTROL_HOLD_EMPTY	0
+#define SM501_MISC_CONTROL_HOLD_8TR	1
+#define SM501_MISC_CONTROL_HOLD_16TR	2
+#define SM501_MISC_CONTROL_HOLD_24TR	3
+#define SM501_MISC_CONTROL_HOLD_32TR	4
+
+/* Miscellaneous timing */
+#define SM501_MISC_TIMING_EX_HOLD_0	0
+#define SM501_MISC_TIMING_EX_HOLD_16	1
+#define SM501_MISC_TIMING_EX_HOLD_32	2
+#define SM501_MISC_TIMING_EX_HOLD_48	3
+#define SM501_MISC_TIMING_EX_HOLD_64	4
+#define SM501_MISC_TIMING_EX_HOLD_80	5
+#define SM501_MISC_TIMING_EX_HOLD_96	6
+#define SM501_MISC_TIMING_EX_HOLD_112	7
+#define SM501_MISC_TIMING_EX_HOLD_128	8
+#define SM501_MISC_TIMING_EX_HOLD_144	9
+#define SM501_MISC_TIMING_EX_HOLD_160	10
+#define SM501_MISC_TIMING_EX_HOLD_176	11
+#define SM501_MISC_TIMING_EX_HOLD_192	12
+#define SM501_MISC_TIMING_EX_HOLD_208	13
+#define SM501_MISC_TIMING_EX_HOLD_224	14
+#define SM501_MISC_TIMING_EX_HOLD_240	15
+
+#define SM501_MISC_TIMING_XC_INTERNAL	0
+#define SM501_MISC_TIMING_XC_HCLK	1
+#define SM501_MISC_TIMING_XC_GPIO	2
+
+#define SM501_MISC_TIMING_SM_DIV1	0
+#define SM501_MISC_TIMING_SM_DIV2	1
+#define SM501_MISC_TIMING_SM_DIV4	2
+#define SM501_MISC_TIMING_SM_DIV8	3
+#define SM501_MISC_TIMING_SM_DIV16	4
+#define SM501_MISC_TIMING_SM_DIV32	5
+#define SM501_MISC_TIMING_SM_DIV64	6
+#define SM501_MISC_TIMING_SM_DIV128	7
+#define SM501_MISC_TIMING_SM_DIV3	8
+#define SM501_MISC_TIMING_SM_DIV6	9
+#define SM501_MISC_TIMING_SM_DIV12	10
+#define SM501_MISC_TIMING_SM_DIV24	11
+#define SM501_MISC_TIMING_SM_DIV48	12
+#define SM501_MISC_TIMING_SM_DIV96	13
+#define SM501_MISC_TIMING_SM_DIV192	14
+#define SM501_MISC_TIMING_SM_DIV384	15
+
+#define SM501_MISC_TIMING_DIV336MHZ	0
+#define SM501_MISC_TIMING_DIV288MHZ	1
+#define SM501_MISC_TIMING_DIV240MHZ	2
+#define SM501_MISC_TIMING_DIV192MHZ	3
+
+#define SM501_MISC_TIMING_DELAY_NONE	0
+#define SM501_MISC_TIMING_DELAY_0_5	1
+#define SM501_MISC_TIMING_DELAY_1_0	2
+#define SM501_MISC_TIMING_DELAY_1_5	3
+#define SM501_MISC_TIMING_DELAY_2_0	4
+#define SM501_MISC_TIMING_DELAY_2_5	5
+
+#endif