Re: [PATCH 1/3] pinctrl: rockchip: fix RK3328 pinmux bits
From: Huang-Huang Bao
Date: Thu Jun 06 2024 - 07:25:35 EST
On 6/6/24 18:08, Heiko Stübner wrote:
Hi,
Am Donnerstag, 6. Juni 2024, 08:04:33 CEST schrieb Huang-Huang Bao:
The pinmux bits for GPIO2-B0 to GPIO2-B6 actually have 2 bits width,
correct the bank flag for GPIO2-B. The pinmux bits for GPIO2-B7 is
recalculated so it remain unchanged.
I've verified the gpio2-related pin settings via the TRM, so this part
looks good :-)
The pinmux bits for GPIO3-B1 to GPIO3-B6 have different register offset
than common rockhip pinmux, set the correct value for those pins in
rk3328_mux_recalced_data.
The pinmux bits for those pins are not explicitly specified in RK3328
TRM, however we can get hint from pad name and its correspinding IOMUX
setting for pins in interface descriptions, e.g.
IO_SPIclkm0_GPIO2B0vccio5 with GRF_GPIO2B_IOMUX[1:0]=2'b01 setting.
This fix has been tested on NanoPi R2S for fixing confliting pinmux bits
between GPIO2-15 with GPIO2-13.
As you said, the gpio3-based pins are not documented in the TRM,
but in your description above you're talking about pins in the gpio2-
group?
So where did the gpio3-related pin information come from?
Sorry I didn't explained it clearly, gpio3 information is inferred from
pad name in interface descriptions similar to gpio2's, all those pad
name has format of "*GPIO<bank><pin number>*". So I just search up
interface description rows with pad name from "GPIO2B0" to "GPIO2B6" and
from "GPIO3B1" to "GPIO4B7" to find potential IOMUX bits definitions.
For example, there is IO_TSPd5m0_CIFdata5m0_GPIO3B1vccio6 with
GRF_GPIO3BH_iomux[3:2] = 2'b01 setting for GPIO3B1.
Maybe I can list all these occurrences in v2.
Also, could you please split this patch in two pieces, one fixing the
gpio2-area and one for the new gpio3 pins please?
Sure.
Thanks
Heiko
Signed-off-by: Huang-Huang Bao <i@xxxxxx>
---
drivers/pinctrl/pinctrl-rockchip.c | 59 ++++++++++++++++++++++++++----
1 file changed, 52 insertions(+), 7 deletions(-)
diff --git a/drivers/pinctrl/pinctrl-rockchip.c b/drivers/pinctrl/pinctrl-rockchip.c
index 3bedf36a0019..23531ea0d088 100644
--- a/drivers/pinctrl/pinctrl-rockchip.c
+++ b/drivers/pinctrl/pinctrl-rockchip.c
@@ -634,23 +634,68 @@ static struct rockchip_mux_recalced_data rk3308_mux_recalced_data[] = {
static struct rockchip_mux_recalced_data rk3328_mux_recalced_data[] = {
{
- .num = 2,
- .pin = 12,
- .reg = 0x24,
- .bit = 8,
- .mask = 0x3
- }, {
+ /* gpio2_b7_sel */
.num = 2,
.pin = 15,
.reg = 0x28,
.bit = 0,
.mask = 0x7
}, {
+ /* gpio2_c7_sel */
.num = 2,
.pin = 23,
.reg = 0x30,
.bit = 14,
.mask = 0x3
+ }, {
+ /* gpio3_b1_sel */
+ .num = 3,
+ .pin = 9,
+ .reg = 0x44,
+ .bit = 2,
+ .mask = 0x3
+ }, {
+ /* gpio3_b2_sel */
+ .num = 3,
+ .pin = 10,
+ .reg = 0x44,
+ .bit = 4,
+ .mask = 0x3
+ }, {
+ /* gpio3_b3_sel */
+ .num = 3,
+ .pin = 11,
+ .reg = 0x44,
+ .bit = 6,
+ .mask = 0x3
+ }, {
+ /* gpio3_b4_sel */
+ .num = 3,
+ .pin = 12,
+ .reg = 0x44,
+ .bit = 8,
+ .mask = 0x3
+ }, {
+ /* gpio3_b5_sel */
+ .num = 3,
+ .pin = 13,
+ .reg = 0x44,
+ .bit = 10,
+ .mask = 0x3
+ }, {
+ /* gpio3_b6_sel */
+ .num = 3,
+ .pin = 14,
+ .reg = 0x44,
+ .bit = 12,
+ .mask = 0x3
+ }, {
+ /* gpio3_b7_sel */
+ .num = 3,
+ .pin = 15,
+ .reg = 0x44,
+ .bit = 14,
+ .mask = 0x3
},
};
@@ -3763,7 +3808,7 @@ static struct rockchip_pin_bank rk3328_pin_banks[] = {
PIN_BANK_IOMUX_FLAGS(0, 32, "gpio0", 0, 0, 0, 0),
PIN_BANK_IOMUX_FLAGS(1, 32, "gpio1", 0, 0, 0, 0),
PIN_BANK_IOMUX_FLAGS(2, 32, "gpio2", 0,
- IOMUX_WIDTH_3BIT,
+ 0,
IOMUX_WIDTH_3BIT,
0),
PIN_BANK_IOMUX_FLAGS(3, 32, "gpio3",