J742S2 has the same part number as J784S4 but JTAG_DEVICE_ID has a PKG bit that tells about J742S2.
Add support for reading JTAG_DEVICE_ID and set family as J742S2 based on that. Link: https://www.ti.com/lit/pdf/spruje3 (TRM) Signed-off-by: Manorit Chawdhry <m-chawd...@ti.com> --- arch/arm/mach-k3/include/mach/hardware.h | 6 ++++++ drivers/soc/soc_ti_k3.c | 16 ++++++++++++++-- 2 files changed, 20 insertions(+), 2 deletions(-) diff --git a/arch/arm/mach-k3/include/mach/hardware.h b/arch/arm/mach-k3/include/mach/hardware.h index b191d53a0f580aacd9283f06f057b47858864fe5..1657697fbd818c05d57fd4792062e91a01e3ed66 100644 --- a/arch/arm/mach-k3/include/mach/hardware.h +++ b/arch/arm/mach-k3/include/mach/hardware.h @@ -62,6 +62,12 @@ #define JTAG_ID_PARTNO_J722S 0xbba0 #define JTAG_ID_PARTNO_J784S4 0xbb80 +#define CTRLMMR_WKUP_JTAG_DEVICE_ID (WKUP_CTRL_MMR0_BASE + 0x18) +#define JTAG_DEV_J742S2_PKG_MASK GENMASK(2, 0) +#define JTAG_DEV_J742S2_PKG_SHIFT 0 + +#define JTAG_ID_PKG_J742S2 0x7 + #define K3_SOC_ID(id, ID) \ static inline bool soc_is_##id(void) \ { \ diff --git a/drivers/soc/soc_ti_k3.c b/drivers/soc/soc_ti_k3.c index a3acca4d394273aad53efd3eee200ecdda50c31b..b34cbd08e0732b15ff96364afe0372ece205272d 100644 --- a/drivers/soc/soc_ti_k3.c +++ b/drivers/soc/soc_ti_k3.c @@ -18,8 +18,12 @@ struct soc_ti_k3_plat { static const char *get_family_string(u32 idreg) { const char *family; + u32 jtag_dev_id; + u32 pkg; u32 soc; + jtag_dev_id = readl(CTRLMMR_WKUP_JTAG_DEVICE_ID); + soc = (idreg & JTAG_ID_PARTNO_MASK) >> JTAG_ID_PARTNO_SHIFT; switch (soc) { @@ -51,8 +55,16 @@ static const char *get_family_string(u32 idreg) family = "J722S"; break; case JTAG_ID_PARTNO_J784S4: - family = "J784S4"; - break; + { + /* Keep default family as J784S4 */ + family = "J784S4"; + + pkg = (jtag_dev_id & JTAG_DEV_J742S2_PKG_MASK) >> JTAG_DEV_J742S2_PKG_SHIFT; + if (pkg == JTAG_ID_PKG_J742S2) + family = "J742S2"; + + break; + } default: family = "Unknown Silicon"; }; -- 2.34.1
