diff options
Diffstat (limited to 'package/boot/uboot-mediatek/patches/101-07-i2c-mediatek-fix-I2C-usability-for-MT7981.patch')
| -rw-r--r-- | package/boot/uboot-mediatek/patches/101-07-i2c-mediatek-fix-I2C-usability-for-MT7981.patch | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/package/boot/uboot-mediatek/patches/101-07-i2c-mediatek-fix-I2C-usability-for-MT7981.patch b/package/boot/uboot-mediatek/patches/101-07-i2c-mediatek-fix-I2C-usability-for-MT7981.patch new file mode 100644 index 0000000000..dd00104c39 --- /dev/null +++ b/package/boot/uboot-mediatek/patches/101-07-i2c-mediatek-fix-I2C-usability-for-MT7981.patch @@ -0,0 +1,125 @@ +From 77898faf6ce56eb08109cdb853f074bad5acee55 Mon Sep 17 00:00:00 2001 +From: Weijie Gao <weijie.gao@mediatek.com> +Date: Wed, 19 Jul 2023 17:16:15 +0800 +Subject: [PATCH 07/29] i2c: mediatek: fix I2C usability for MT7981 + +MT7981 actually uses MediaTek I2C controller v3 instead of v1. +This patch adds support for I2C controller v3 fix fixes the I2C usability +for MT7981. + +Signed-off-by: Sam Shih <sam.shih@mediatek.com> +Signed-off-by: Weijie Gao <weijie.gao@mediatek.com> +--- + drivers/i2c/mtk_i2c.c | 45 +++++++++++++++++++++++++++++++++++++++++-- + 1 file changed, 43 insertions(+), 2 deletions(-) + +--- a/drivers/i2c/mtk_i2c.c ++++ b/drivers/i2c/mtk_i2c.c +@@ -183,9 +183,36 @@ static const uint mt_i2c_regs_v2[] = { + [REG_DCM_EN] = 0xf88, + }; + ++static const uint mt_i2c_regs_v3[] = { ++ [REG_PORT] = 0x0, ++ [REG_INTR_MASK] = 0x8, ++ [REG_INTR_STAT] = 0xc, ++ [REG_CONTROL] = 0x10, ++ [REG_TRANSFER_LEN] = 0x14, ++ [REG_TRANSAC_LEN] = 0x18, ++ [REG_DELAY_LEN] = 0x1c, ++ [REG_TIMING] = 0x20, ++ [REG_START] = 0x24, ++ [REG_EXT_CONF] = 0x28, ++ [REG_LTIMING] = 0x2c, ++ [REG_HS] = 0x30, ++ [REG_IO_CONFIG] = 0x34, ++ [REG_FIFO_ADDR_CLR] = 0x38, ++ [REG_TRANSFER_LEN_AUX] = 0x44, ++ [REG_CLOCK_DIV] = 0x48, ++ [REG_SOFTRESET] = 0x50, ++ [REG_SLAVE_ADDR] = 0x94, ++ [REG_DEBUGSTAT] = 0xe4, ++ [REG_DEBUGCTRL] = 0xe8, ++ [REG_FIFO_STAT] = 0xf4, ++ [REG_FIFO_THRESH] = 0xf8, ++ [REG_DCM_EN] = 0xf88, ++}; ++ + struct mtk_i2c_soc_data { + const uint *regs; + uint dma_sync: 1; ++ uint ltiming_adjust: 1; + }; + + struct mtk_i2c_priv { +@@ -401,6 +428,10 @@ static int mtk_i2c_set_speed(struct udev + (sample_cnt << HS_SAMPLE_OFFSET) | + (step_cnt << HS_STEP_OFFSET); + i2c_writel(priv, REG_HS, high_speed_reg); ++ if (priv->soc_data->ltiming_adjust) { ++ timing_reg = (sample_cnt << 12) | (step_cnt << 9); ++ i2c_writel(priv, REG_LTIMING, timing_reg); ++ } + } else { + ret = mtk_i2c_calculate_speed(clk_src, priv->speed, + &step_cnt, &sample_cnt); +@@ -412,7 +443,12 @@ static int mtk_i2c_set_speed(struct udev + high_speed_reg = I2C_TIME_CLR_VALUE; + i2c_writel(priv, REG_TIMING, timing_reg); + i2c_writel(priv, REG_HS, high_speed_reg); ++ if (priv->soc_data->ltiming_adjust) { ++ timing_reg = (sample_cnt << 6) | step_cnt; ++ i2c_writel(priv, REG_LTIMING, timing_reg); ++ } + } ++ + exit: + if (mtk_i2c_clk_disable(priv)) + return log_msg_ret("set_speed disable clk", -1); +@@ -725,7 +761,6 @@ static int mtk_i2c_probe(struct udevice + return log_msg_ret("probe enable clk", -1); + + mtk_i2c_init_hw(priv); +- + if (mtk_i2c_clk_disable(priv)) + return log_msg_ret("probe disable clk", -1); + +@@ -750,31 +785,37 @@ static int mtk_i2c_deblock(struct udevic + static const struct mtk_i2c_soc_data mt76xx_soc_data = { + .regs = mt_i2c_regs_v1, + .dma_sync = 0, ++ .ltiming_adjust = 0, + }; + + static const struct mtk_i2c_soc_data mt7981_soc_data = { +- .regs = mt_i2c_regs_v1, ++ .regs = mt_i2c_regs_v3, + .dma_sync = 1, ++ .ltiming_adjust = 1, + }; + + static const struct mtk_i2c_soc_data mt7986_soc_data = { + .regs = mt_i2c_regs_v1, + .dma_sync = 1, ++ .ltiming_adjust = 0, + }; + + static const struct mtk_i2c_soc_data mt8183_soc_data = { + .regs = mt_i2c_regs_v2, + .dma_sync = 1, ++ .ltiming_adjust = 0, + }; + + static const struct mtk_i2c_soc_data mt8518_soc_data = { + .regs = mt_i2c_regs_v1, + .dma_sync = 0, ++ .ltiming_adjust = 0, + }; + + static const struct mtk_i2c_soc_data mt8512_soc_data = { + .regs = mt_i2c_regs_v1, + .dma_sync = 1, ++ .ltiming_adjust = 0, + }; + + static const struct dm_i2c_ops mtk_i2c_ops = { |