The Renesas/IDT SPD5118 Hub Controller is known to take the specification
literally and does not permit access to volatile registers except for the
page register if the selected page is non-zero. Explicitly name the chip
to ensure that the information does not get lost.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
* If the device type registers return 0, it is possible that the chip
* has a non-zero page selected and takes the specification literally,
* i.e. disables access to volatile registers besides the page register
- * if the page is not 0. Try to identify such chips.
+ * if the page is not 0. The Renesas/ITD SPD5118 Hub Controller is known
+ * to show this behavior. Try to identify such chips.
*/
if (!regval) {
/* Vendor ID registers must also be 0 */