linux-kernel - Re: [PATCH v2 5/5] clk: samsung: gs101: add support for cmu

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Date: Fri, 26 Apr 2024 11:09:52 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Peter Griffin <peter.griffin@...aro.org>, Michael Turquette
 <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring
 <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
 <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>, Krzysztof
 Kozlowski <krzk@...nel.org>, Sylwester Nawrocki <s.nawrocki@...sung.com>,
 Chanwoo Choi <cw00.choi@...sung.com>
Cc: Tudor Ambarus <tudor.ambarus@...aro.org>, Will McVicker
	 <willmcvicker@...gle.com>, kernel-team@...roid.com, 
	linux-arm-kernel@...ts.infradead.org, linux-samsung-soc@...r.kernel.org, 
	linux-clk@...r.kernel.org, devicetree@...r.kernel.org, 
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 5/5] clk: samsung: gs101: add support for cmu_hsi2

On Fri, 2024-04-26 at 11:03 +0100, André Draszik wrote:
> From: Peter Griffin <peter.griffin@...aro.org>
> 
> CMU_HSI2 is the clock management unit used for the hsi2 block.
> HSI stands for High Speed Interface and as such it generates
> clocks for PCIe, UFS and MMC card.
> 
> This patch adds support for the muxes, dividers, and gates in
> cmu_hsi2.
> 
> The following clocks are marked CLK_IS_CRITICAL as disabling
> them results in an immediate system hang.
> CLK_GOUT_HSI2_HSI2_CMU_HSI2_PCLK
> CLK_GOUT_HSI2_LHM_AXI_P_HSI2_I_CLK
> 
> The following clocks are marked CLK_IGNORE_UNUSED as they are
> needed for UFS to be functional.
> CLK_GOUT_HSI2_SSMT_HSI2_ACLK
> CLK_GOUT_HSI2_SSMT_HSI2_PCLK
> CLK_GOUT_HSI2_LHS_ACEL_D_HSI2_I_CLK
> CLK_GOUT_HSI2_SYSMMU_HSI2_CLK_S2
> CLK_GOUT_HSI2_XIU_D_HSI2_ACLK
> CLK_GOUT_HSI2_XIU_P_HSI2_ACLK
> 
> CLK_GOUT_HSI2_GPIO_HSI2_PCLK is marked CLK_IGNORE_UNUSED until
> the exynos pinctrl clock patches land then it can be removed.
> 
> Some clocks in this unit have very long names. To help with this
> the clock name mangling strategy was updated to include removing
> the following sub-strings.
> - G4X2_DWC_PCIE_CTL_
> - G4X1_DWC_PCIE_CTL_
> - PCIE_SUB_CTRL_
> - INST_0_
> - LN05LPE_
> - TM_WRAPPER_
> - SF_
> 
> Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
> [AD: resolve merge conflicts]
> Signed-off-by: André Draszik <andre.draszik@...aro.org>

Reviewed-by: André Draszik <andre.draszik@...aro.org>