bus: ti-sysc: Fix missing AM35xx SoC matching

Commit feaa8baee82a ("bus: ti-sysc: Implement SoC revision handling")
created a list of SoC types searching for strings based on names
and wildcards which associates the SoC to different families.

The OMAP34xx and OMAP35xx are treated as SOC_3430 while
OMAP36xx and OMAP37xx are treated as SOC_3630, but the AM35xx
isn't listed.

The AM35xx is mostly an OMAP3430, and a later commit a12315d6d270
("bus: ti-sysc: Make omap3 gpt12 quirk handling SoC specific") looks
for the SOC type and behaves in a certain way if it's SOC_3430.

This caused a regression on the AM3517 causing it to return two
errors:

 ti-sysc: probe of 48318000.target-module failed with error -16
 ti-sysc: probe of 49032000.target-module failed with error -16

Fix this by treating the creating SOC_AM35 and inserting it between
the SOC_3430 and SOC_3630.  If it is treaed the same way as the
SOC_3430 when checking the status of sysc_check_active_timer,
the error conditions will disappear.

Fixes: a12315d6d270 ("bus: ti-sysc: Make omap3 gpt12 quirk handling SoC specific")
Fixes: feaa8baee82a ("bus: ti-sysc: Implement SoC revision handling")
Signed-off-by: Adam Ford <aford173@gmail.com>
Message-ID: <20230906233442.270835-1-aford173@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index cf09b6b88cf75420f9f588ea9a7aac0172d645fc..33e8d780b04ba34ac83bb5f45132c6ac3636438c 100644 (file)
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -38,6 +38,7 @@ enum sysc_soc {
        SOC_2420,
        SOC_2430,
        SOC_3430,
+       SOC_AM35,
        SOC_3630,
        SOC_4430,
        SOC_4460,
@@ -1862,7 +1863,7 @@ static void sysc_pre_reset_quirk_dss(struct sysc *ddata)
                dev_warn(ddata->dev, "%s: timed out %08x !+ %08x\n",
                         __func__, val, irq_mask);
 
-       if (sysc_soc->soc == SOC_3430) {
+       if (sysc_soc->soc == SOC_3430 || sysc_soc->soc == SOC_AM35) {
                /* Clear DSS_SDI_CONTROL */
                sysc_write(ddata, 0x44, 0);
 
@@ -3024,6 +3025,7 @@ static void ti_sysc_idle(struct work_struct *work)
 static const struct soc_device_attribute sysc_soc_match[] = {
        SOC_FLAG("OMAP242*", SOC_2420),
        SOC_FLAG("OMAP243*", SOC_2430),
+       SOC_FLAG("AM35*", SOC_AM35),
        SOC_FLAG("OMAP3[45]*", SOC_3430),
        SOC_FLAG("OMAP3[67]*", SOC_3630),
        SOC_FLAG("OMAP443*", SOC_4430),
@@ -3228,7 +3230,7 @@ static int sysc_check_active_timer(struct sysc *ddata)
         * can be dropped if we stop supporting old beagleboard revisions
         * A to B4 at some point.
         */
-       if (sysc_soc->soc == SOC_3430)
+       if (sysc_soc->soc == SOC_3430 || sysc_soc->soc == SOC_AM35)
                error = -ENXIO;
        else
                error = -EBUSY;