Commit e9115302 authored by Thomas Zimmermann's avatar Thomas Zimmermann
Browse files

drm/ast: Remove unused mclk field 



The memory clock is not necessary for the driver. In default for
AST2600 is event incorrect; should be 800 MHz. Remove it.

Signed-off-by: default avatarThomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: default avatarJocelyn Falempe <jfalempe@redhat.com>
Link: https://lore.kernel.org/r/20250826065032.344412-4-tzimmermann@suse.de
parent dc2a40f4

drivers/gpu/drm/ast/ast_drv.h

+0 −1
Original line number Diff line number Diff line
@@ -173,7 +173,6 @@ struct ast_device { 
	enum ast_chip chip;



	uint32_t dram_type;

	uint32_t mclk;



	void __iomem	*vram;

	unsigned long	vram_base;

drivers/gpu/drm/ast/ast_main.c

+0 −26
Original line number Diff line number Diff line
@@ -215,7 +215,6 @@ static int ast_get_dram_info(struct ast_device *ast) 
	struct drm_device *dev = &ast->base;

	struct device_node *np = dev->dev->of_node;

	uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap;

	uint32_t denum, num, div, ref_pll, dsel;



	switch (ast->config_mode) {

	case ast_use_dt:
@@ -243,10 +242,6 @@ static int ast_get_dram_info(struct ast_device *ast) 
	case ast_use_defaults:

	default:

		ast->dram_type = AST_DRAM_1Gx16;

		if (IS_AST_GEN6(ast))

			ast->mclk = 800;

		else

			ast->mclk = 396;

		return 0;

	}
@@ -300,27 +295,6 @@ static int ast_get_dram_info(struct ast_device *ast) 
		}

	}



	if (mcr_scu_strap & 0x2000)

		ref_pll = 14318;

	else

		ref_pll = 12000;



	denum = mcr_scu_mpll & 0x1f;

	num = (mcr_scu_mpll & 0x3fe0) >> 5;

	dsel = (mcr_scu_mpll & 0xc000) >> 14;

	switch (dsel) {

	case 3:

		div = 0x4;

		break;

	case 2:

	case 1:

		div = 0x2;

		break;

	default:

		div = 0x1;

		break;

	}

	ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000));

	return 0;

}