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author | Dave Airlie <airlied@redhat.com> | 2016-05-10 15:01:47 +1000 |
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committer | Dave Airlie <airlied@redhat.com> | 2016-05-10 15:01:47 +1000 |
commit | 2e726dc4b4e2dd3ae3fe675f9d3af88a2d593ee1 (patch) | |
tree | bb22392b580c3c58e9973c4a50133d580f861f98 /drivers/clk | |
parent | bafb86f5bc3173479002555dea7f31d943b12332 (diff) | |
parent | ac4b1280319c3032787ac95bfeff14a425c417bf (diff) | |
download | linux-next-2e726dc4b4e2dd3ae3fe675f9d3af88a2d593ee1.tar.gz |
Merge tag 'mediatek-drm-2016-05-09' of git://git.pengutronix.de/git/pza/linux into drm-next
MT8173 DRM support
- device tree binding documentation for all MT8173 display
subsystem components
- basic mediatek-drm driver for MT8173 with two optional,
currently fixed output paths:
- DSI encoder support for DSI and (via bridge) eDP panels
- DPI encoder support for output to HDMI bridge
- necessary clock tree changes for the DPI->HDMI path
- export mtk-smi functions used by mediatek-drm
* tag 'mediatek-drm-2016-05-09' of git://git.pengutronix.de/git/pza/linux:
clk: mediatek: remove hdmitx_dig_cts from TOP clocks
clk: mediatek: Add hdmi_ref HDMI PHY PLL reference clock output
clk: mediatek: make dpi0_sel propagate rate changes
drm/mediatek: Add DPI sub driver
drm/mediatek: Add DSI sub driver
drm/mediatek: Add DRM Driver for Mediatek SoC MT8173.
dt-bindings: drm/mediatek: Add Mediatek display subsystem dts binding
memory: mtk-smi: export mtk_smi_larb_get/put
Diffstat (limited to 'drivers/clk')
-rw-r--r-- | drivers/clk/mediatek/clk-mt8173.c | 12 | ||||
-rw-r--r-- | drivers/clk/mediatek/clk-mtk.h | 15 |
2 files changed, 23 insertions, 4 deletions
diff --git a/drivers/clk/mediatek/clk-mt8173.c b/drivers/clk/mediatek/clk-mt8173.c index 227e356403d9..10c986018a08 100644 --- a/drivers/clk/mediatek/clk-mt8173.c +++ b/drivers/clk/mediatek/clk-mt8173.c @@ -61,7 +61,6 @@ static const struct mtk_fixed_factor top_divs[] __initconst = { FACTOR(CLK_TOP_CLKRTC_INT, "clkrtc_int", "clk26m", 1, 793), FACTOR(CLK_TOP_FPC, "fpc_ck", "clk26m", 1, 1), - FACTOR(CLK_TOP_HDMITX_DIG_CTS, "hdmitx_dig_cts", "tvdpll_445p5m", 1, 3), FACTOR(CLK_TOP_HDMITXPLL_D2, "hdmitxpll_d2", "hdmitx_dig_cts", 1, 2), FACTOR(CLK_TOP_HDMITXPLL_D3, "hdmitxpll_d3", "hdmitx_dig_cts", 1, 3), @@ -558,7 +557,11 @@ static const struct mtk_composite top_muxes[] __initconst = { MUX_GATE(CLK_TOP_ATB_SEL, "atb_sel", atb_parents, 0x0090, 16, 2, 23), MUX_GATE(CLK_TOP_VENC_LT_SEL, "venclt_sel", venc_lt_parents, 0x0090, 24, 4, 31), /* CLK_CFG_6 */ - MUX_GATE(CLK_TOP_DPI0_SEL, "dpi0_sel", dpi0_parents, 0x00a0, 0, 3, 7), + /* + * The dpi0_sel clock should not propagate rate changes to its parent + * clock so the dpi driver can have full control over PLL and divider. + */ + MUX_GATE_FLAGS(CLK_TOP_DPI0_SEL, "dpi0_sel", dpi0_parents, 0x00a0, 0, 3, 7, 0), MUX_GATE(CLK_TOP_IRDA_SEL, "irda_sel", irda_parents, 0x00a0, 8, 2, 15), MUX_GATE(CLK_TOP_CCI400_SEL, "cci400_sel", cci400_parents, 0x00a0, 16, 3, 23), MUX_GATE(CLK_TOP_AUD_1_SEL, "aud_1_sel", aud_1_parents, 0x00a0, 24, 2, 31), @@ -1091,6 +1094,11 @@ static void __init mtk_apmixedsys_init(struct device_node *node) clk_data->clks[cku->id] = clk; } + clk = clk_register_divider(NULL, "hdmi_ref", "tvdpll_594m", 0, + base + 0x40, 16, 3, CLK_DIVIDER_POWER_OF_TWO, + NULL); + clk_data->clks[CLK_APMIXED_HDMI_REF] = clk; + r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data); if (r) pr_err("%s(): could not register clock provider: %d\n", diff --git a/drivers/clk/mediatek/clk-mtk.h b/drivers/clk/mediatek/clk-mtk.h index 32d2e455eb3f..9f24fcfa304f 100644 --- a/drivers/clk/mediatek/clk-mtk.h +++ b/drivers/clk/mediatek/clk-mtk.h @@ -83,7 +83,11 @@ struct mtk_composite { signed char num_parents; }; -#define MUX_GATE(_id, _name, _parents, _reg, _shift, _width, _gate) { \ +/* + * In case the rate change propagation to parent clocks is undesirable, + * this macro allows to specify the clock flags manually. + */ +#define MUX_GATE_FLAGS(_id, _name, _parents, _reg, _shift, _width, _gate, _flags) { \ .id = _id, \ .name = _name, \ .mux_reg = _reg, \ @@ -94,9 +98,16 @@ struct mtk_composite { .divider_shift = -1, \ .parent_names = _parents, \ .num_parents = ARRAY_SIZE(_parents), \ - .flags = CLK_SET_RATE_PARENT, \ + .flags = _flags, \ } +/* + * Unless necessary, all MUX_GATE clocks propagate rate changes to their + * parent clock by default. + */ +#define MUX_GATE(_id, _name, _parents, _reg, _shift, _width, _gate) \ + MUX_GATE_FLAGS(_id, _name, _parents, _reg, _shift, _width, _gate, CLK_SET_RATE_PARENT) + #define MUX(_id, _name, _parents, _reg, _shift, _width) { \ .id = _id, \ .name = _name, \ |