[PATCH] sh: sh7785lcr: register the PCA9564 as I2C bus 0

[Karl Mehltretter]

The R2025S/D board information is registered on I2C bus 0. Commit
44454baa7ca7 ("i2c: Dynamically assign adapter id if it wasn't explictly
specified") changed the PCA9564 platform driver to pass negative platform
device IDs to the I2C core. The SH7785LCR device uses ID -1, so the core
assigns it a dynamic bus number. Reserving bus 0 for the board information
makes i2c-1 the first dynamic bus, and the RTC is never instantiated.

Set the platform device ID to 0 so the adapter is registered as i2c-0 and
the RTC board information matches it.

Fixes: 44454baa7ca7 ("i2c: Dynamically assign adapter id if it wasn't explictly specified")
Assisted-by: LLM
Signed-off-by: Karl Mehltretter <kmehltretter@xxxxxxxxx>
---

Tested with 29-bit and 32-bit kernels on a custom QEMU model of the
SH7785LCR. Both registered the controller as i2c-0 and the R2025S/D as
rtc0.
Testing on real hardware is welcome.

 arch/sh/boards/board-sh7785lcr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/sh/boards/board-sh7785lcr.c b/arch/sh/boards/board-sh7785lcr.c
index 25c4968f0d8b..b93423df582f 100644
--- a/arch/sh/boards/board-sh7785lcr.c
+++ b/arch/sh/boards/board-sh7785lcr.c
@@ -256,7 +256,7 @@ static struct i2c_pca9564_pf_platform_data i2c_platform_data = {
 
 static struct platform_device i2c_device = {
 	.name		= "i2c-pca-platform",
-	.id		= -1,
+	.id		= 0,
 	.dev		= {
 		.platform_data	= &i2c_platform_data,
 	},
-- 
2.53.0