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 c5b119ddb70b8..7f2b73cbd2280 100644 --- a/arch/arm/boot/dts/lpc32xx.dtsi +++ b/arch/arm/boot/dts/lpc32xx.dtsi @@ -323,9 +323,6 @@ clk: clock-controller@0 {
clocks = <&xtal_32k>, <&xtal>; clock-names = "xtal_32k", "xtal"; - - assigned-clocks = <&clk LPC32XX_CLK_HCLK_PLL>; - assigned-clock-rates = <208000000>; }; };