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Commit e452acf2 authored by Jeykumar Sankaran's avatar Jeykumar Sankaran
Browse files

disp: msm: dsi: skip pll clock registration for trusted vm 



Trusted VM will be granted access to MDSS HW dynamically on
usecase boundary. As a result, all the attempts to access
HW before the assignment, including the probe time access
will result in Stage 2 faults. This change skips the
PLL clock registration during probe as the clocks will not
be controlled by the VM.

Change-Id: I326f4a775796cd95dcf398449b08f2682e4aca43
Signed-off-by: default avatarJeykumar Sankaran <jsanka@codeaurora.org>
parent 2310f221

msm/dsi/dsi_pll.c

+9 −0
Original line number Diff line number Diff line
@@ -118,6 +118,7 @@ int dsi_pll_init(struct platform_device *pdev, struct dsi_pll_resource **pll) 
	int rc = 0;

	const char *label;

	struct dsi_pll_resource *pll_res = NULL;

	bool in_trusted_vm = false;



	if (!pdev->dev.of_node) {

		pr_err("Invalid DSI PHY node\n");
@@ -201,6 +202,14 @@ int dsi_pll_init(struct platform_device *pdev, struct dsi_pll_resource **pll) 
		return -ENOMEM;

	}



	in_trusted_vm = of_property_read_bool(pdev->dev.of_node,

						"qcom,dsi-pll-in-trusted-vm");

	if (in_trusted_vm) {

		DSI_PLL_INFO(pll_res,

			"Bypassing PLL clock register for Trusted VM\n");

		return rc;

	}



	rc = dsi_pll_clock_register(pdev, pll_res);

	if (rc) {

		DSI_PLL_ERR(pll_res, "clock register failed rc=%d\n", rc);