1 From 230003c14f7beedf4042bf2258b04e2cd5aac270 Mon Sep 17 00:00:00 2001
2 From: Weijie Gao <weijie.gao@mediatek.com>
3 Date: Wed, 31 Aug 2022 19:04:38 +0800
4 Subject: [PATCH 13/32] pwm: mtk: add support for MediaTek MT7981 SoC
6 This patch adds PWM support for MediaTek MT7981 SoC.
7 MT7981 uses a different register offset so we have to add a version field
8 to indicate the IP core version.
10 Reviewed-by: Simon Glass <sjg@chromium.org>
11 Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
13 drivers/pwm/pwm-mtk.c | 34 ++++++++++++++++++++++++++++++++--
14 1 file changed, 32 insertions(+), 2 deletions(-)
16 --- a/drivers/pwm/pwm-mtk.c
17 +++ b/drivers/pwm/pwm-mtk.c
20 #define NSEC_PER_SEC 1000000000L
22 -static const unsigned int mtk_pwm_reg_offset[] = {
23 +enum mtk_pwm_reg_ver {
28 +static const unsigned int mtk_pwm_reg_offset_v1[] = {
29 0x0010, 0x0050, 0x0090, 0x00d0, 0x0110, 0x0150, 0x0190, 0x0220
32 +static const unsigned int mtk_pwm_reg_offset_v2[] = {
33 + 0x0080, 0x00c0, 0x0100, 0x0140, 0x0180, 0x01c0, 0x0200, 0x0240
37 unsigned int num_pwms;
39 + enum mtk_pwm_reg_ver reg_ver;
43 @@ -49,7 +59,16 @@ struct mtk_pwm_priv {
44 static void mtk_pwm_w32(struct udevice *dev, uint channel, uint reg, uint val)
46 struct mtk_pwm_priv *priv = dev_get_priv(dev);
47 - u32 offset = mtk_pwm_reg_offset[channel];
50 + switch (priv->soc->reg_ver) {
52 + offset = mtk_pwm_reg_offset_v2[channel];
56 + offset = mtk_pwm_reg_offset_v1[channel];
59 writel(val, priv->base + offset + reg);
61 @@ -159,27 +178,38 @@ static const struct pwm_ops mtk_pwm_ops
62 static const struct mtk_pwm_soc mt7622_data = {
65 + .reg_ver = PWM_REG_V1,
68 static const struct mtk_pwm_soc mt7623_data = {
71 + .reg_ver = PWM_REG_V1,
74 static const struct mtk_pwm_soc mt7629_data = {
77 + .reg_ver = PWM_REG_V1,
80 +static const struct mtk_pwm_soc mt7981_data = {
82 + .pwm45_fixup = false,
83 + .reg_ver = PWM_REG_V2,
86 static const struct mtk_pwm_soc mt7986_data = {
89 + .reg_ver = PWM_REG_V1,
92 static const struct udevice_id mtk_pwm_ids[] = {
93 { .compatible = "mediatek,mt7622-pwm", .data = (ulong)&mt7622_data },
94 { .compatible = "mediatek,mt7623-pwm", .data = (ulong)&mt7623_data },
95 { .compatible = "mediatek,mt7629-pwm", .data = (ulong)&mt7629_data },
96 + { .compatible = "mediatek,mt7981-pwm", .data = (ulong)&mt7981_data },
97 { .compatible = "mediatek,mt7986-pwm", .data = (ulong)&mt7986_data },