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drm/nouveau/fb/ramgt215: Change FBVDD/Q when BIOS asks for it

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Signed-off-by: Roy Spliet <rspliet@eclipso.eu>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
This commit is contained in:
Roy Spliet 2015-09-30 00:23:46 +01:00 committed by Ben Skeggs
parent e0a37f85fc
commit ef6e8f4c7f
3 changed files with 20 additions and 0 deletions
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1
drivers/gpu/drm/nouveau/include/nvkm/subdev/bios/ramcfg.h
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@ -39,6 +39,7 @@ struct nvbios_ramcfg {
unsigned ramcfg_timing;
unsigned ramcfg_DLLoff;
unsigned ramcfg_RON;
unsigned ramcfg_FBVDDQ;
union {
struct {
unsigned ramcfg_00_03_01:1;

1
drivers/gpu/drm/nouveau/nvkm/subdev/bios/rammap.c
View File

@ -205,6 +205,7 @@ nvbios_rammapSp(struct nvkm_bios *bios, u32 data,
p->ramcfg_DLLoff = (nvbios_rd08(bios, data + 0x02) & 0x40) >> 6;
p->ramcfg_10_03_0f = (nvbios_rd08(bios, data + 0x03) & 0x0f) >> 0;
p->ramcfg_10_04_01 = (nvbios_rd08(bios, data + 0x04) & 0x01) >> 0;
p->ramcfg_FBVDDQ = (nvbios_rd08(bios, data + 0x04) & 0x08) >> 3;
p->ramcfg_10_05 = (nvbios_rd08(bios, data + 0x05) & 0xff) >> 0;
p->ramcfg_10_06 = (nvbios_rd08(bios, data + 0x06) & 0xff) >> 0;
p->ramcfg_10_07 = (nvbios_rd08(bios, data + 0x07) & 0xff) >> 0;

18
drivers/gpu/drm/nouveau/nvkm/subdev/fb/ramgt215.c
View File

@ -498,6 +498,7 @@ gt215_ram_calc(struct nvkm_ram *base, u32 freq)
struct nvkm_device *device = subdev->device;
struct nvkm_bios *bios = device->bios;
struct gt215_clk_info mclk;
struct nvkm_gpio *gpio = device->gpio;
struct nvkm_ram_data *next;
u8 ver, hdr, cnt, len, strap;
u32 data;
@ -656,6 +657,23 @@ gt215_ram_calc(struct nvkm_ram *base, u32 freq)
if (device->chipset == 0xa3 && freq <= 500000)
ram_mask(fuc, 0x100700, 0x00000006, 0x00000006);
/* Alter FBVDD/Q, apparently must be done with PLL disabled, thus
* set it to bypass */
if (nvkm_gpio_get(gpio, 0, 0x18, DCB_GPIO_UNUSED) ==
next->bios.ramcfg_FBVDDQ) {
data = ram_rd32(fuc, 0x004000) & 0x9;
if (data == 0x1)
ram_mask(fuc, 0x004000, 0x8, 0x8);
if (data & 0x1)
ram_mask(fuc, 0x004000, 0x1, 0x0);
gt215_ram_gpio(fuc, 0x18, !next->bios.ramcfg_FBVDDQ);
if (data & 0x1)
ram_mask(fuc, 0x004000, 0x1, 0x1);
}
/* Fiddle with clocks */
/* There's 4 scenario's
* pll->pll: first switch to a 324MHz clock, set up new PLL, switch