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Commit 94421a5e authored by Yan He's avatar Yan He
Browse files

msm: pcie: add the option for reference clock type 



Add the option to support both external reference clock and
internal reference clock.

Change-Id: I45591eb83c3efafc56aa2b81e39f18039d28bd79
Signed-off-by: default avatarYan He <yanhe@codeaurora.org>
parent cf0a8e3d

Documentation/devicetree/bindings/pci/msm_pcie.txt

+2 −0
Original line number Diff line number Diff line
@@ -50,6 +50,7 @@ Optional Properties: 
    support L1ss.

  - qcom,msi-gicm-addr: MSI address for GICv2m.

  - qcom,msi-gicm-base: MSI IRQ base for GICv2m.

  - qcom,ext-ref-clk: The reference clock is external.



Example:
@@ -111,4 +112,5 @@ Example: 
		qcom,aux-clk-sync;

		qcom,msi-gicm-addr = <0xf9040040>;

		qcom,msi-gicm-base = <0x160>;

		qcom,ext-ref-clk;

	};

arch/arm/mach-msm/pcie.c

+6 −0
Original line number Diff line number Diff line
@@ -1237,6 +1237,12 @@ static int msm_pcie_probe(struct platform_device *pdev) 
	PCIE_DBG("AUX clock is %s synchronous to Core clock.\n",

		msm_pcie_dev[rc_idx].aux_clk_sync ? "" : "not");



	msm_pcie_dev[rc_idx].ext_ref_clk =

		of_property_read_bool((&pdev->dev)->of_node,

				"qcom,ext-ref-clk");

	PCIE_DBG("ref clk is %s.\n",

		msm_pcie_dev[rc_idx].ext_ref_clk ? "external" : "internal");



	msm_pcie_dev[rc_idx].msi_gicm_addr = 0;

	msm_pcie_dev[rc_idx].msi_gicm_base = 0;

	ret = of_property_read_u32((&pdev->dev)->of_node,

arch/arm/mach-msm/pcie.h

+2 −1
Original line number Diff line number Diff line 
/* Copyright (c) 2012-2013, The Linux Foundation. All rights reserved.

/* Copyright (c) 2012-2014, The Linux Foundation. All rights reserved.

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 and
@@ -174,6 +174,7 @@ struct msm_pcie_dev_t { 


	bool                         l1ss_supported;

	bool                         aux_clk_sync;

	bool                         ext_ref_clk;



	uint32_t                     rc_idx;

	bool                         enumerated;