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From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org,
	Alexandre Belloni <alexandre.belloni@bootlin.com>,
	Gregory CLEMENT <gregory.clement@bootlin.com>,
	Arnd Bergmann <arnd@arndb.de>, Sasha Levin <sashal@kernel.org>
Subject: [PATCH 4.19 13/50] ARM: dts: lpc32xx: Revert set default clock rate of HCLK PLL
Date: Mon, 22 Feb 2021 13:13:04 +0100
Message-ID: <20210222121022.252083286@linuxfoundation.org> (raw)
In-Reply-To: <20210222121019.925481519@linuxfoundation.org>

From: Alexandre Belloni <alexandre.belloni@bootlin.com>

[ Upstream commit 5638159f6d93b99ec9743ac7f65563fca3cf413d ]

This reverts commit c17e9377aa81664d94b4f2102559fcf2a01ec8e7.

The lpc32xx clock driver is not able to actually change the PLL rate as
this would require reparenting ARM_CLK, DDRAM_CLK, PERIPH_CLK to SYSCLK,
then stop the PLL, update the register, restart the PLL and wait for the
PLL to lock and finally reparent ARM_CLK, DDRAM_CLK, PERIPH_CLK to HCLK
PLL.

Currently, the HCLK driver simply updates the registers but this has no
real effect and all the clock rate calculation end up being wrong. This is
especially annoying for the peripheral (e.g. UARTs, I2C, SPI).

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Tested-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20210203090320.GA3760268@piout.net'
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/lpc32xx.dtsi | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/arm/boot/dts/lpc32xx.dtsi b/arch/arm/boot/dts/lpc32xx.dtsi
index 9ad3df11db0d8..abef034987a27 100644
--- a/arch/arm/boot/dts/lpc32xx.dtsi
+++ b/arch/arm/boot/dts/lpc32xx.dtsi
@@ -323,9 +323,6 @@
 
 					clocks = <&xtal_32k>, <&xtal>;
 					clock-names = "xtal_32k", "xtal";
-
-					assigned-clocks = <&clk LPC32XX_CLK_HCLK_PLL>;
-					assigned-clock-rates = <208000000>;
 				};
 			};
 
-- 
2.27.0




  parent reply index

Thread overview: 56+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-02-22 12:12 [PATCH 4.19 00/50] 4.19.177-rc1 review Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 01/50] tracing: Do not count ftrace events in top level enable output Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 02/50] tracing: Check length before giving out the filter buffer Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 03/50] arm/xen: Dont probe xenbus as part of an early initcall Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 04/50] arm64: dts: rockchip: Fix PCIe DT properties on rk3399 Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 05/50] platform/x86: hp-wmi: Disable tablet-mode reporting by default Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 06/50] ovl: perform vfs_getxattr() with mounter creds Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 07/50] cap: fix conversions on getxattr Greg Kroah-Hartman
2021-02-22 12:12 ` [PATCH 4.19 08/50] ovl: skip getxattr of security labels Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 09/50] drm/amd/display: Fix dc_sink kref count in emulated_link_detect Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 10/50] drm/amd/display: Free atomic state after drm_atomic_commit Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 11/50] riscv: virt_addr_valid must check the address belongs to linear mapping Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 12/50] bfq-iosched: Revert "bfq: Fix computation of shallow depth" Greg Kroah-Hartman
2021-02-22 12:13 ` Greg Kroah-Hartman [this message]
2021-02-22 12:13 ` [PATCH 4.19 14/50] ARM: ensure the signal page contains defined contents Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 15/50] ARM: kexec: fix oops after TLB are invalidated Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 16/50] mt76: dma: fix a possible memory leak in mt76_add_fragment() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 17/50] bpf: Check for integer overflow when using roundup_pow_of_two() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 18/50] netfilter: xt_recent: Fix attempt to update deleted entry Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 19/50] netfilter: flowtable: fix tcp and udp header checksum update Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 20/50] xen/netback: avoid race in xenvif_rx_ring_slots_available() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 21/50] net: stmmac: set TxQ mode back to DCB after disabling CBS Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 22/50] netfilter: conntrack: skip identical origin tuple in same zone only Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 23/50] net: hns3: add a check for queue_id in hclge_reset_vf_queue() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 24/50] firmware_loader: align .builtin_fw to 8 Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 25/50] i2c: stm32f7: fix configuration of the digital filter Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 26/50] h8300: fix PREEMPTION build, TI_PRE_COUNT undefined Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 27/50] usb: dwc3: ulpi: fix checkpatch warning Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 28/50] usb: dwc3: ulpi: Replace CPU-based busyloop with Protocol-based one Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 29/50] net: fix iteration for sctp transport seq_files Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 30/50] net/vmw_vsock: improve locking in vsock_connect_timeout() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 31/50] net: watchdog: hold device global xmit lock during tx disable Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 32/50] vsock/virtio: update credit only if socket is not closed Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 33/50] vsock: fix locking in vsock_shutdown() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 34/50] net/rds: restrict iovecs length for RDS_CMSG_RDMA_ARGS Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 35/50] net/qrtr: restrict user-controlled length in qrtr_tun_write_iter() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 36/50] ovl: expand warning in ovl_d_real() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 37/50] x86/build: Disable CET instrumentation in the kernel for 32-bit too Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 38/50] KVM: SEV: fix double locking due to incorrect backport Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 39/50] net: qrtr: Fix port ID for control messages Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 40/50] Xen/x86: dont bail early from clear_foreign_p2m_mapping() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 41/50] Xen/x86: also check kernel mapping in set_foreign_p2m_mapping() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 42/50] Xen/gntdev: correct dev_bus_addr handling in gntdev_map_grant_pages() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 43/50] Xen/gntdev: correct error checking " Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 44/50] xen/arm: dont ignore return errors from set_phys_to_machine Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 45/50] xen-blkback: dont "handle" error by BUG() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 46/50] xen-netback: " Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 47/50] xen-scsiback: " Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 48/50] xen-blkback: fix error handling in xen_blkbk_map() Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 49/50] scsi: qla2xxx: Fix crash during driver load on big endian machines Greg Kroah-Hartman
2021-02-22 12:13 ` [PATCH 4.19 50/50] kvm: check tlbs_dirty directly Greg Kroah-Hartman
2021-02-22 18:40 ` [PATCH 4.19 00/50] 4.19.177-rc1 review Pavel Machek
2021-02-22 21:28 ` Guenter Roeck
2021-02-22 21:49 ` Igor
2021-02-23 10:10 ` Naresh Kamboju
2021-02-23 21:17 ` Shuah Khan

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