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Mon, 31 Aug 2026 11:35:21 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 14502604347659165387 EX-QQ-RecipientCnt: 11 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=45d152d964e3ce45e9edec9f59d9c6c3813f5a08c03ab9ecf98c15aa6b0c; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Mon, 31 Aug 2026 10:56:14 +0800 Message-Id: Cc: "Troy Mitchell" , , "open list:COMMON CLK FRAMEWORK" , "open list:RISC-V SPACEMIT SoC Support" , "open list:RISC-V SPACEMIT SoC Support" Subject: Re: [PATCH] clk: spacemit: k3: add 2.0 GHz PLL3 and PLL4 rates From: "Troy Mitchell" To: "Aurelien Jarno" , , "Michael Turquette" , "Stephen Boyd" , "Brian Masney" , "Yixun Lan" X-Mailer: aerc 0.21.0-0-g5549850facc2 References: <20260830172925.3245444-1-aurelien@aurel32.net> In-Reply-To: X-QQ-SENDSIZE: 520 Feedback-ID: zesmtpsz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: ND/mBJD/7OR7PGkk69XmI1gaENmIVcowyJtXuJEzHHgg4YgDiCrFMhH6 3hk/hi2zFeg6AU7KmIBxPA1BGZrzIxZzaC5Bqvvmlu0XShhglRj13LRoM3V9pQVaUp9Twtc MiToM343QKnj7o/YG1RvvKd1bJXAAJ1Ce5G4U4cVeAXHY1UKe2VQOUnnAkvdsF2GSAUhI27 ou1miFzLdhHMrWK8jXRAi5EOL4jf6j4/MNX6ztOWfV41kHleC65qo+wEZaQkKc9E9FCTyvO QqXPFGiMYXTQf+nHpkMQ50XimcCDAmPT6pGt47nhZDvekRXiU2lILKZ8/kHH6lAe3qekwzg duELv1SHzCrBGYEE4fUT1Jpb16RXQp/YTi6XShZRYSnnaIIL1Ej+6y5HvsTZ600D4lL6HKD K4Skm/e9kCF7DGblLlyg36f+Wu3nvYbg+1WLCcYDj+EIX4ht06MjBh8UvhYLt0Lsm2jNcn1 T3qzlg7VoLb3/lBZjMiI0+eMP6aXYwiGTmlkW2lh5SIniHUd8KQbNQShkHcpFs1OHi1GFvf KDQDfuX73mQ+PT+cZRpef8GgNbxKam24NdB3/oPsh8zcGccXXHvAqWyFGLDdjpzaQ6uodm0 zUaIK3BLskxUq6Q/TnAjI1iGlz/awB8VG6cioFuOGfF2lgje+XuxVWe+esncyNDASXkrQi5 yb2VEg93pKsI/H9L71gitWGqx4ZHGQ5R3YHtxadu7J7vxxx/5ZiUeqRHiPYpd99A5wJ+7KU 47wdbDX394v/GEafZbPY9rY4UtqSNitowaAXrChabzs+33tjlS7BhO84tzqHdD0EMw22Gm9 d8yh8oISSHEMcy3xbHpQjJ/1pLfoUSt00V5HJknGSsCSacrPzGXlggfFC27zhkt7btriQxz ObgU8cKjNWMBLeggidpj0JJ1KpWPo29gtWJ+3oL3Obur89wBSqeRVkX4qxRCGUnrPSpM+Yo /OONC9fT893KS/KTts8o6f8zOqLGB2ddMZhYbTxCZRgVHAfY8cK6WlJp9KaByU/kvD0dOCB 8QjTiZ/jJH0SV61QYN/nFmFqjbCy8h0NR8cBKbo2t1uuEMLiaqtnRK9/d8qDi/gR9HU0IfU AxToKm07kBTzWbKP/bfWBTbvdjEl8VmSiJpqDVxdsjF8+hk3kYpQWk7nyNFYDsVFw== X-QQ-XMRINFO: OD9hHCdaPRBwH5bRRRw8tsiH4UAatJqXfg== X-QQ-RECHKSPAM: 0 --45d152d964e3ce45e9edec9f59d9c6c3813f5a08c03ab9ecf98c15aa6b0c Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Mon Aug 31, 2026 at 2:12 AM +08, Aurelien Jarno wrote: > On 2026-08-30 19:28, Aurelien Jarno wrote: >> Starting with version k3-br-v1.0.7, the vendor U-Boot configures the C0 >> and C1 CPU clock domains (X100 cores) to 2.0 GHz instead of 2.2 GHz. >> PLL3 feeds C0 and PLL4 feeds C1, but their rate tables currently contain >> only the 2.2 GHz overclocking operating point. This causes the linux >> kernel to hang at boot. >>=20 >> Add the 2.0 GHz configuration in both tables to fix the issue. Tested >> with both k3-br-v1.0.5 (X100 running at 2.2 GHz) and k3-br-v1.0.7 (X100 >> cores running at 2.0 GHz). >>=20 >> Cc: Troy Mitchell >> Cc: stable@kernel.org >> Fixes: e371a77255b8 ("clk: spacemit: k3: add the clock tree") >> Signed-off-by: Aurelien Jarno >> --- >> drivers/clk/spacemit/ccu-k3.c | 2 ++ >> 1 file changed, 2 insertions(+) >>=20 >> The related U-Boot change is available at: >> https://github.com/spacemit-com/uboot-2022.10/commit/274f664150dade144df= 265baf7dc8e15dd9cce52 > > FYI, this is the Sashiko review: > https://lore.kernel.org/20260830173644.193B21F000E9@smtp.kernel.org > > While I agree we can fix the SpacemiT clock driver, we'll need to add=20 > this rate anyway, and it immediately fixes the issue. Fixing the clock=20 > driver is more work and this will take more time to fix. This is indeed an issue that needs to be fixed, but not right now. It isn't directly related to adding the frequency table either, so I chose to submit the frequency table separately first to get it merged as soon as possible. --=20 Troy Mitchell --45d152d964e3ce45e9edec9f59d9c6c3813f5a08c03ab9ecf98c15aa6b0c Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIMEABYKACsWIQSL4Ay2cExaPXAQcU2YCe+A+TM0LwUCapTtTg0caUB0cm95LXku b3JnAAoJEJgJ74D5MzQvufcBAJF5c7qhT5yZg7ivpkqICsTQ/HYT/aNRWc6ihuz9 X0eLAP9Kc1g/BDOzqVSIBpXH0rlWHaYlaGMBzoRaNeYKhFcMDg== =x53U -----END PGP SIGNATURE----- --45d152d964e3ce45e9edec9f59d9c6c3813f5a08c03ab9ecf98c15aa6b0c--