Submit gs201 felix bring-up patch series 0001-0015 upstream

[ccrutchf]

What

15 patches drafted in the junkyard-boot-img/upstream-patches/ tree, applied on the felix branch of this kernel, are not yet sent to LKML / scsi-for-next / linux-arm-kernel.

Series breakdown

0001-0006 — UFS bring-up basics:

• 0001 don't clobber bootloader IOCC bits when disabling
• 0002 drop UFSHCD_QUIRK_PRDT_BYTE_GRAN from gs201 (lets UFS reach HS-G4 L2)
• 0003 force 32-bit DMA mask on gs201/Tensor G2
• 0004 fix two PMA register transcription typos in phy-samsung-gs101-ufs
• 0005 enable PRDT prefetch on gs201 without crying
• 0006 run PHY post-PMC calibration for non-PWM (gs101)

0007-0012 — PHY/UFS fixes:

• 0007 add missing END_UFS_PHY_CFG terminator to pre_pwr_hs table
• 0008 KDN_CTRL_MON dump + GSA mailbox shim for KDN_SET_OP_MODE
• 0009 drop H8-entry writes from post_pwr_hs_config
• 0010 three missing writes from systematic cal-if walk (gs101/gs201)
• 0011 drop DESCTYPE probe loop, set FMPSECURITY0.DESCTYPE=0
• 0012 silence debug instrumentation (dev_info -> dev_dbg) — interim, see UFS/PHY dev_info instrumentation needs proper cleanup before upstream #2

0013-0015 — gs201 CMU + UART:

• 0013 clk-samsung-gs101: add gs201 Tensor G2 CMU_TOP/CMU_MIF
• 0014 clk-samsung-gs101: add gs201 CMU_PERIC0 + USI0_UART chains
• 0015 tty/serial/samsung: add google,gs201-uart compat (UPIO_MEM32)

Outreach

Drafts to Pixel team (8 questions, including AOC firmware) and Peter Griffin queued in upstream-help/. Two open questions before sending:

1. The HS-Rate-B wedge (gs201 felix UFS: HS-Rate-B wedges at every gear (PWM workaround active) #1) — disclose the issue and ask for guidance, or ship the PWM-clamp series as-is and chase HS separately?
2. dev_info cleanup (UFS/PHY dev_info instrumentation needs proper cleanup before upstream #2) — needs a real pass before 0012 is acceptable to mainline.

Why this matters

Out-of-tree patches rot. Each rebase against a newer upstream point (the 7.0 RTM rebase last week was the most recent) costs effort that goes away once these are landed. They're also of general interest — gs101/gs201 felix is one of the few Tensor devices being mainlined.