[PATCH v3] i2c: imx: add imx7d compatible string for applying errata ERR007805

Carlos Song
2024-12-18T04:31:38Z

Compatible string "fsl,imx7d-i2c" is not exited at i2c-imx driver
compatible string table, at the result, "fsl,imx21-i2c" will be
matched, but it will cause errata ERR007805 not be applied in fact.

So Add "fsl,imx7d-i2c" compatible string in i2c-imx driver to apply
the errata ERR007805(https://www.nxp.com/webapp/Download?colCode=
IMX7DS_2N09P).

"fsl,imx7d-i2c" already is documented in binding doc. This errata
fix has been included in imx6_i2c_hwdata and it is the same in all
I.MX6/7/8, so just reuse it.

Signed-off-by: Carlos Song <carlos.song@nxp.com>
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
---
Change for V3:
- No ACK, so resend this patch.
Change for V2:
- I have tried to fix this issue at imx7s.dtsi in V1, according to
the community suggestion, I make V2 patch for i2c-imx driver to
avoid updating the FDT to fix an errata. Discussion in V1:
Subject: [PATCH] ARM: dts: imx7s: change i2c compatible string for applying errata ERR007805
Message-ID: <20241021031148.2682015-1-carlos.song@nxp.com> (raw)
---
drivers/i2c/busses/i2c-imx.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/i2c/busses/i2c-imx.c b/drivers/i2c/busses/i2c-imx.c
index 350346a7892c..9d5caa032c5c 100644
--- a/drivers/i2c/busses/i2c-imx.c
+++ b/drivers/i2c/busses/i2c-imx.c
@@ -335,6 +335,7 @@ static const struct of_device_id i2c_imx_dt_ids[] = {
{ .compatible = "fsl,imx6sll-i2c", .data = &imx6_i2c_hwdata, },
{ .compatible = "fsl,imx6sx-i2c", .data = &imx6_i2c_hwdata, },
{ .compatible = "fsl,imx6ul-i2c", .data = &imx6_i2c_hwdata, },
+ { .compatible = "fsl,imx7d-i2c", .data = &imx6_i2c_hwdata, },
{ .compatible = "fsl,imx7s-i2c", .data = &imx6_i2c_hwdata, },
{ .compatible = "fsl,imx8mm-i2c", .data = &imx6_i2c_hwdata, },
{ .compatible = "fsl,imx8mn-i2c", .data = &imx6_i2c_hwdata, },
--
2.34.1