Commit 7f511d51 authored by Adam Ford's avatar Adam Ford Committed by Shawn Guo
Browse files

soc: imx: imx8m-blk-ctrl: add i.MX8MN DISP blk-ctrl 



This adds the description for the i.MX8MN disp blk-ctrl.

Signed-off-by: default avatarAdam Ford <aford173@gmail.com>
Reviewed-by: default avatarLucas Stach <l.stach@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent b77beaae

drivers/soc/imx/imx8m-blk-ctrl.c

+76 −1
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ 
#include <linux/clk.h>



#include <dt-bindings/power/imx8mm-power.h>

#include <dt-bindings/power/imx8mn-power.h>



#define BLK_SFT_RSTN	0x0

#define BLK_CLK_EN	0x4
@@ -498,6 +499,77 @@ static const struct imx8m_blk_ctrl_data imx8mm_disp_blk_ctl_dev_data = { 
	.num_domains = ARRAY_SIZE(imx8mm_disp_blk_ctl_domain_data),

};





static int imx8mn_disp_power_notifier(struct notifier_block *nb,

				      unsigned long action, void *data)

{

	struct imx8m_blk_ctrl *bc = container_of(nb, struct imx8m_blk_ctrl,

						 power_nb);



	if (action != GENPD_NOTIFY_ON && action != GENPD_NOTIFY_PRE_OFF)

		return NOTIFY_OK;



	/* Enable bus clock and deassert bus reset */

	regmap_set_bits(bc->regmap, BLK_CLK_EN, BIT(8));

	regmap_set_bits(bc->regmap, BLK_SFT_RSTN, BIT(8));



	/*

	 * On power up we have no software backchannel to the GPC to

	 * wait for the ADB handshake to happen, so we just delay for a

	 * bit. On power down the GPC driver waits for the handshake.

	 */

	if (action == GENPD_NOTIFY_ON)

		udelay(5);





	return NOTIFY_OK;

}



static const struct imx8m_blk_ctrl_domain_data imx8mn_disp_blk_ctl_domain_data[] = {

	[IMX8MN_DISPBLK_PD_MIPI_DSI] = {

		.name = "dispblk-mipi-dsi",

		.clk_names = (const char *[]){ "dsi-pclk", "dsi-ref", },

		.num_clks = 2,

		.gpc_name = "mipi-dsi",

		.rst_mask = BIT(0) | BIT(1),

		.clk_mask = BIT(0) | BIT(1),

		.mipi_phy_rst_mask = BIT(17),

	},

	[IMX8MN_DISPBLK_PD_MIPI_CSI] = {

		.name = "dispblk-mipi-csi",

		.clk_names = (const char *[]){ "csi-aclk", "csi-pclk" },

		.num_clks = 2,

		.gpc_name = "mipi-csi",

		.rst_mask = BIT(2) | BIT(3),

		.clk_mask = BIT(2) | BIT(3),

		.mipi_phy_rst_mask = BIT(16),

	},

	[IMX8MN_DISPBLK_PD_LCDIF] = {

		.name = "dispblk-lcdif",

		.clk_names = (const char *[]){ "lcdif-axi", "lcdif-apb", "lcdif-pix", },

		.num_clks = 3,

		.gpc_name = "lcdif",

		.rst_mask = BIT(4) | BIT(5),

		.clk_mask = BIT(4) | BIT(5),

	},

	[IMX8MN_DISPBLK_PD_ISI] = {

		.name = "dispblk-isi",

		.clk_names = (const char *[]){ "disp_axi", "disp_apb", "disp_axi_root",

						"disp_apb_root"},

		.num_clks = 4,

		.gpc_name = "isi",

		.rst_mask = BIT(6) | BIT(7),

		.clk_mask = BIT(6) | BIT(7),

	},

};



static const struct imx8m_blk_ctrl_data imx8mn_disp_blk_ctl_dev_data = {

	.max_reg = 0x84,

	.power_notifier_fn = imx8mn_disp_power_notifier,

	.domains = imx8mn_disp_blk_ctl_domain_data,

	.num_domains = ARRAY_SIZE(imx8mn_disp_blk_ctl_domain_data),

};



static const struct of_device_id imx8m_blk_ctrl_of_match[] = {

	{

		.compatible = "fsl,imx8mm-vpu-blk-ctrl",
@@ -505,6 +577,9 @@ static const struct of_device_id imx8m_blk_ctrl_of_match[] = { 
	}, {

		.compatible = "fsl,imx8mm-disp-blk-ctrl",

		.data = &imx8mm_disp_blk_ctl_dev_data

	}, {

		.compatible = "fsl,imx8mn-disp-blk-ctrl",

		.data = &imx8mn_disp_blk_ctl_dev_data

	}, {

		/* Sentinel */

	}