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Mon, 31 Aug 2026 11:40:45 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 10785841376019705639 EX-QQ-RecipientCnt: 17 Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=76c5c7c6483ed5fd9eb1e185aa1b9ece1314890f287a7c78af87385efe71; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Mon, 31 Aug 2026 11:06:00 +0800 Message-Id: Cc: "Michael Turquette" , "Stephen Boyd" , "Brian Masney" , "Yixun Lan" , "Inochi Amaoto" , "Alex Elder" , "Haylen Chu" , , , , , "Paul Walmsley" , "Palmer Dabbelt" , "Albert Ou" , "Alexandre Ghiti" Subject: Re: [PATCH v2] clk: spacemit: k3: add 1.8 GHz PLL5 and PLL8 rates From: "Troy Mitchell" To: "Aurelien Jarno" , "Troy Mitchell" X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260810-k3-pll5-pll8-1800mhz-v2-1-aabff510a797@linux.spacemit.com> In-Reply-To: X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: NDcdydrNm/XtFmDWDwG77Y3qnBeQf5lPsnF07Lnr7kH6dWJ3t470x8rg oZCmOoa35/xxf5nhi44yg4lsOPXKfHaZZXnU+Fujc32UG/EPR/PAfbv3f0xtYz7825myR+Y gSAmE2ko8K+yf94AflJPOcfioLMbxW3fpMiUsmTddQA14a7tENN0/sac2InpiLuXDeizCUC c+UpYMl6O4a+PIpFMz/weM6jUtiUQhhBLnWUp6LG6/tCGsl6d7yEqeeePcn3Aw1Z7UPsbvL J5SS9Z+cRXrDv1pnULHcHb2l7AOmdiAsofmXZ7eN48gAdHJWsTq+FyaEdPZtwpAbePK4DiW zs9GN5gQRyDsFMJOhtlTULyi6U6BFak6yTh6CQY+9YDPyL9FpttjRWO/D+Zok9jxTvDsp4N CFqfTRUNTN2Z7PVb+rTgiFA7yomxnX89gku0lH2e8OU7fIjmt3aRj0hiMgMuoMl/mR0fnnd eedhP48uQt6pEl+iW+dTRp8DO/0WqjcDLjAXgaQzTW74PtVtCEa2ZcR89WJD8a4FGxV2AVZ /yfvgA/MU6GH/6VtkGFPySVBAc0bPl9iVh4Gzi0vLJ934PfszngAEWFkTTGqJnPC+vFiI9x CA7W8mWT9qWKIDUS5i69Sl6OlKtc/duyEAPg/zFWxTIoCeB9A1yCLmEBhTaP3fpmveEyoTX klygI1Yu/8wzxgbUScIsbOmugieRnkk8ij3LS5PZbWAZ7+h454Mtp+FydCVnMpe9022PMy2 WWG6iLePfPaEm0P3M5CFkeP1RpsCnXPaj+R+CYudx9hP3csY4veVQ9NK8NEfPS1w3a/Twtz I4QZGvrF9pyHiAfz1q40TFGp7ydAwWcCCpqt5t3POfmXiR12s1ZPwaA2K6uOW6q67psgxXc ODzegRiqxajATKwc4bIUGXXFb0OdsCFekjK2yZHVe0ykWKl/j8KbzJFLMX4sjVuvnQGvxMF EYshqQDLEDCtvbLkaDTkB8PvEFISjNwNY/7tfbOJ4yldGdtzYswjRZWmvH4srHgcTE2Ni7I mhsvgm6DhrtghH3EKVHluNHSJP1vK0GfK0mUM0xfs2Ow17ilpupYpQdYluT7EC+6UmI2+ky P4+GxWLX0RiYoASVdygvYBs3hQHhMPghP7bURwg00CHZSLYrZK0uKfQOb+c0+kw/vPKHm4Y y+VdV4e5IqKBM3VRJoR5PwkhuRg+PxS9hCxyQRotrx0tn674VnLsNIRawT9mFzkK/LW/ X-QQ-XMRINFO: NI4Ajvh11aEjEMj13RCX7UuhPEoou2bs1g== X-QQ-RECHKSPAM: 0 --76c5c7c6483ed5fd9eb1e185aa1b9ece1314890f287a7c78af87385efe71 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Mon Aug 31, 2026 at 1:25 AM +08, Aurelien Jarno wrote: > Hi Troy, > > On 2026-08-10 16:46, Troy Mitchell wrote: >> K3 boot firmware configures the C2 and C3 CPU clock domains at >> 1.8 GHz. PLL5 feeds C2 and PLL8 feeds C3, but their rate tables >> currently contain only the 2 GHz overclocking operating point. >>=20 >> Add the nominal 1.8 GHz configuration as the first entry in both >> tables. This lets determine_rate() and set_rate() select the firmware >> operating point while retaining 2 GHz as a supported overclocking rate. >>=20 >> Signed-off-by: Troy Mitchell >> --- >> The related U-Boot change is available at: >> https://github.com/spacemit-com/uboot-2022.10/commit/fb95cf3d848b771c61b= 5a1b3e5cbbee223faf352 >> --- >> Changes in v2: >> - Drop "clk: spacemit: re-enable PLLs after init"; the PLL init issue >> will be handled in a separate series. >> - Send the K3 PLL5 and PLL8 1.8 GHz rate-table update as a standalone >> patch. >> - Clarify that 1.8 GHz is nominal and 2 GHz is an overclocking rate. >> - Link to v1: https://patch.msgid.link/20260804-k3-pll5-pll8-1800mhz-v1-= 0-a3a75866ce32@linux.spacemit.com > > This make sense and looks good: > > Reviewed-by: Aurelien Jarno > Tested-by: Aurelien Jarno > > I wonder if it should be backported to stable, as users will deploy=20 > newer firmware. Yes. I'll Cc: stable@vger.kernel.org in the next version. Thanks for your tags. --=20 Troy Mitchell --76c5c7c6483ed5fd9eb1e185aa1b9ece1314890f287a7c78af87385efe71 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIMEABYKACsWIQSL4Ay2cExaPXAQcU2YCe+A+TM0LwUCapTvmA0caUB0cm95LXku b3JnAAoJEJgJ74D5MzQvQDIA/3RL7VXwzHuHjnzdOwa1VtWuQpzXbNq9GItBdCdH 0H0gAQDz6KseX2X3tpAb+avR3WoWXHlYlpXdXrZQ7y29Mk+zCg== =sgJs -----END PGP SIGNATURE----- --76c5c7c6483ed5fd9eb1e185aa1b9ece1314890f287a7c78af87385efe71--