linux-kernel - Re: [PATCH 1/5] clk: samsung: gs101: gpio_peric0

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Date: Sat, 27 Jan 2024 03:51:22 +0000
From: Tudor Ambarus <tudor.ambarus@...aro.org>
To: André Draszik <andre.draszik@...aro.org>,
 peter.griffin@...aro.org, robh+dt@...nel.org,
 krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org
Cc: linux-kernel@...r.kernel.org, kernel-team@...roid.com,
 willmcvicker@...gle.com, semen.protsenko@...aro.org,
 alim.akhtar@...sung.com, s.nawrocki@...sung.com, tomasz.figa@...il.com,
 cw00.choi@...sung.com, mturquette@...libre.com, sboyd@...nel.org,
 linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org,
 linux-clk@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 1/5] clk: samsung: gs101: gpio_peric0_pclk needs to be
 kept on



On 1/27/24 00:35, André Draszik wrote:
> This pclk clock is required any time we access the pinctrl registers of
> this block.
> 
> Since pinctrl-samsung doesn't support a clock at the moment, we just
> keep the kernel from disabling it at boot, until we have an update for
> pinctrl-samsung to handle this required clock, at which point we'll be
> able to drop the flag again.
> 
> Fixes: 893f133a040b ("clk: samsung: gs101: add support for cmu_peric0")
> Signed-off-by: André Draszik <andre.draszik@...aro.org>

Reviewed-by: Tudor Ambarus <tudor.ambarus@...aro.org>

> ---
>  drivers/clk/samsung/clk-gs101.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/clk/samsung/clk-gs101.c b/drivers/clk/samsung/clk-gs101.c
> index 4a0520e825b6..61bb0dcf84ee 100644
> --- a/drivers/clk/samsung/clk-gs101.c
> +++ b/drivers/clk/samsung/clk-gs101.c
> @@ -2848,7 +2848,7 @@ static const struct samsung_gate_clock peric0_gate_clks[] __initconst = {
>  	GATE(CLK_GOUT_PERIC0_GPIO_PERIC0_PCLK,
>  	     "gout_peric0_gpio_peric0_pclk", "mout_peric0_bus_user",
>  	     CLK_CON_GAT_GOUT_BLK_PERIC0_UID_GPIO_PERIC0_IPCLKPORT_PCLK,
> -	     21, 0, 0),
> +	     21, CLK_IGNORE_UNUSED, 0),
>  	/* Disabling this clock makes the system hang. Mark the clock as critical. */
>  	GATE(CLK_GOUT_PERIC0_LHM_AXI_P_PERIC0_I_CLK,
>  	     "gout_peric0_lhm_axi_p_peric0_i_clk", "mout_peric0_bus_user",